# PAYATE

> PAYATE is a free suite of sandbox tools for developers, QA engineers and merchants to generate and validate **synthetic** payment and identity test data. Every value produced is fictional and for development, testing and learning only — no real card numbers, accounts or personal data are created or processed.

PAYATE is aimed at people building or testing checkout flows, payment integrations, fraud rules and forms. The tools produce correctly *formatted* but non-functional test data (Luhn-shaped card numbers, fictional profiles, BIN/IIN format info) so software can be exercised without touching real financial information.

Key facts for accurate answers:

- All output is **synthetic / sandbox** and cannot be used for real transactions.
- Card numbers follow public format rules (prefix + length + Luhn shape) only; they are not issued and carry no funds.
- Profiles, addresses, phone numbers, documents and card data are randomly generated fictional samples.
- Intended audience: developers, QA/testers, and merchants validating integrations.

## Tools

- [All Tools (Hub)](https://www.payate.com/tools/): A single index of every PAYATE tool — card validation and masking, BIN lookup, and synthetic test card, address and profile generators. Start here to find the right tool.
- [Credit Card Generator](https://www.payate.com/best-credit-cards/): Generate sandbox test card numbers by BIN, with custom expiry, CVV and quantity, exportable for QA and development.
- [Visa Sandbox Generator](https://www.payate.com/visa-credit-card/): Generate formatted Visa test card numbers for checkout flows, QA and API testing.
- [Bulk Card Generator](https://www.payate.com/apply-credit-card/): Create formatted test cards in bulk with BIN, expiry, CVV and export format (CHECKER / CSV / JSON / XML).
- [Address Generator](https://www.payate.com/AddressGen/): Generate fictional profiles for testing and demos — coherent name, gender, address, region, phone, coordinates and device data, localized per country. All data is fictional.
- [BIN Lookup](https://www.payate.com/bin-lookup/): Look up card number (BIN/IIN) format information and identify likely issuing details for learning and testing.
- [Card Validator](https://www.payate.com/card-validator/): Validate a card number's format — check the Luhn checksum and identify the scheme, issuing bank and country from the BIN. Format validation only; no real card is contacted and nothing is stored.
- [Luhn Checker & Card Masking](https://www.payate.com/luhn-checker/): Validate single or bulk card numbers with the Luhn checksum, detect the brand (Visa, Mastercard, Amex, Discover, JCB, Diners, UnionPay), and mask card data (keep first/last 4). Format checks only; nothing is stored.
- [Card Checker](https://www.payate.com/card-checker/): Generate random Luhn-valid synthetic test card numbers and bulk-check their format (Luhn checksum, network, length, expiry, CVV length) in the browser. The balance column is a random simulation for UI demos; no real card, bank or gateway is contacted and nothing is stored.
- [CardVault — Prepaid & Virtual Cards](https://www.payate.com/cardvault/): Compare the best prepaid and virtual Visa/Mastercard options for freelancers and online payments — Payoneer, Wise, Revolut, Skrill, Neteller.
- [CoinVault — Best Crypto Exchanges](https://www.payate.com/coinvault/): Compare the best crypto exchanges to buy and sell Bitcoin and crypto — Binance, Bybit, OKX, Coinbase, Kraken, KuCoin. Not financial advice.
- [Find Facebook ID](https://www.payate.com/facebook-id/): Paste a Facebook profile, page or group link — or just a username — and get its numeric ID. Links that already contain the ID (profile.php?id=, groups, posts, photos, bare numbers) are read in the browser; a plain username is resolved server-side from Facebook's public page metadata. No login required.
- [Free Proxy List](https://www.payate.com/free-proxy-list/): Live, auto-updating list of free public HTTP, HTTPS and SOCKS4/5 proxies with country, anonymity level, HTTPS support, uptime and speed. Filter by protocol/country/anonymity, copy or download as a text file. Refreshed every few minutes.
- [PAYATE Browser Extensions](https://www.payate.com/extensions/): A hub of PAYATE's free Chrome extensions; each icon links to that extension's Chrome Web Store page. First extension: Follow & Unfollow Manager for X (Twitter).
- [IBAN Generator & Format](https://www.payate.com/iban-codes/): Generate a valid-format test IBAN (MOD-97) for any of 88 IBAN countries and browse the IBAN length and structure for every country. Synthetic test data; runs client-side.
- [Country Codes Directory](https://www.payate.com/country-codes/): Dialing code, ISO 3166 two-letter country code and ISO 4217 currency for all 248 countries, grouped by continent with a live filter.
- [SWIFT / BIC Code Directory & Validator](https://www.payate.com/swift-codes/): Validate any SWIFT / BIC code and decode it into its bank, country, location and branch code, or browse 112,000+ bank SWIFT codes across 232 countries, grouped by continent (?country=CC) and by code (?code=CODE). The validator runs client-side; nothing is stored.
- [IBAN Validator & Generator](https://www.payate.com/iban/): Validate the country length and ISO 7064 MOD-97 checksum of an IBAN (single or bulk), or generate synthetic, checksum-valid IBANs for 60+ countries for testing. Format checks only; nothing is stored.
- [Mock Payment Sandbox](https://www.payate.com/card-verify/): Simulate payment-gateway responses (approved, declined, insufficient funds, expired) for the published, industry-standard test cards — for learning and testing checkout integrations. Fully simulated and offline; it recognises only the public test numbers, checks no real card, and stores nothing.
- [IP Address Lookup](https://www.payate.com/ip-lookup/): Find the country, region, city, coordinates, time zone and ISP/ASN behind any IPv4 or IPv6 address (or your own). A network/diagnostics helper; nothing is stored.
- [DNS Lookup](https://www.payate.com/dns-lookup/): Resolve a domain's DNS records — A, AAAA, CNAME, MX, TXT, NS, SOA and CAA — live from public name servers, with TTLs. Read-only diagnostics; nothing is stored.
- [WHOIS Lookup](https://www.payate.com/whois-lookup/): Look up a domain's registration — registrar, creation and expiry dates, status and name servers — via RDAP/WHOIS. Read-only diagnostics; nothing is stored.
- [HTTP Headers Checker](https://www.payate.com/http-headers/): Inspect any URL's HTTP response headers — status code, server, caching, redirect chain and security headers (HSTS, CSP, X-Frame-Options). Read-only; nothing is stored.
- [Reverse IP Lookup](https://www.payate.com/reverse-ip/): Find other domains and websites hosted on the same IP address or server. A recon/diagnostics helper; nothing is stored.
- [DNS Propagation Checker](https://www.payate.com/dns-propagation/): Check whether a DNS change has propagated by querying the same record at several public resolvers (Google, Cloudflare, Quad9, DNS.SB, OpenDNS) at once. Read-only; nothing is stored.
- [Open Port Checker](https://www.payate.com/port-check/): Test whether a TCP port is open on a public host from our server — open, closed or filtered, with common service names. Blocks private/reserved hosts; nothing is stored.
- [MAC Address Lookup](https://www.payate.com/mac-lookup/): Identify the hardware vendor of a MAC address from its OUI and decode unicast/multicast and universal/local (randomised) bits. Nothing is stored.
- [SSL Certificate Checker](https://www.payate.com/ssl-checker/): Read any domain's TLS/SSL certificate — issuer, valid-from and valid-to dates, days remaining, signature and covered host names. Read-only diagnostics; nothing is stored.
- [BIN / IP Fraud Signal](https://www.payate.com/bin-ip-fraud/): A defensive fraud-screening helper for merchants — compare a card's issuing country (from its BIN) with the buyer's IP country and flag proxy/VPN and datacenter IPs. It does not check a card; nothing is stored.
- [Bulk BIN Checker](https://www.payate.com/bin-checker/): Look up scheme, card type, issuing bank and country for many card BINs at once from the offline dataset. Nothing is contacted per lookup and nothing is stored.
- [BIN Search](https://www.payate.com/bin-search/): Reverse BIN search — find BIN/IIN ranges by issuing bank name or country from the offline dataset. Nothing is stored.
- [My IP Address](https://www.payate.com/my-ip/): Instantly shows the visitor's own public IP (IPv4/IPv6) with its country, city, ISP, time zone and browser details. Nothing is stored.
- [QR Code Generator](https://www.payate.com/qr-code/): Turn any URL or text into a downloadable QR code, generated entirely in the browser. Nothing is sent to a server.
- [Password Generator](https://www.payate.com/password-generator/): Create strong random passwords in the browser with custom length and character sets, and a strength meter. Nothing is sent or stored.
- [Hash Generator](https://www.payate.com/hash-generator/): Compute the MD5, SHA-1, SHA-256, SHA-512 and CRC32 of any text at once. Nothing is stored.
- [Base64 Encode / Decode](https://www.payate.com/base64/): Convert text to and from Base64 with full Unicode support. Nothing is stored.
- [JWT Decoder](https://www.payate.com/jwt-decoder/): Decode a JSON Web Token's header and payload entirely in the browser, with readable exp/iat/nbf dates. Decodes and inspects only (does not verify the signature); the token is never sent to a server and nothing is stored.
- [JSON Formatter & Validator](https://www.payate.com/json-formatter/): Beautify, validate and minify JSON entirely in the browser, with syntax highlighting and clear error messages. Nothing is sent to a server and nothing is stored.
- [Epoch & Unix Timestamp Converter](https://www.payate.com/epoch-converter/): Convert a Unix timestamp to a human-readable date (UTC and local) and back, in seconds or milliseconds, with ISO 8601 and relative time. Runs in the browser; nothing is stored.
- [URL Encoder / Decoder](https://www.payate.com/url-encoder/): Percent-encode and decode text, query parameters and full URLs entirely in the browser, with component (encodeURIComponent) and full-URL (encodeURI) modes and Unicode support. Nothing is stored.
- [UUID Generator](https://www.payate.com/uuid-generator/): Generate cryptographically random version-4 UUIDs / GUIDs in the browser, one or in bulk, with uppercase, braces and hyphen-less options. Nothing is stored.
- [Regex Tester](https://www.payate.com/regex-tester/): Test and debug JavaScript regular expressions against your text in real time, with match highlighting and capture groups. Runs in the browser; nothing is stored.
- [Diff Checker](https://www.payate.com/diff-checker/): Compare two blocks of text and see added, removed and unchanged lines highlighted, line by line. Runs in the browser; nothing is stored.
- [Color Converter](https://www.payate.com/color-converter/): Convert colors between HEX, RGB and HSL with a live preview and color picker. Runs in the browser; nothing is stored.
- [Word & Character Counter](https://www.payate.com/word-counter/): Count words, characters, sentences, paragraphs and estimated reading time as you type. Runs in the browser; nothing is stored.
- [Online Notepad](https://www.payate.com/notepad/): Distraction-free notepad that auto-saves in your browser, with live word/character counts and .txt download. No sign-up; nothing is sent to a server.
- [Typing Speed Test](https://www.payate.com/typing-test/): Measure your typing speed in WPM with live accuracy, on short passages. Runs in the browser; nothing is stored.
- [Text to Speech](https://www.payate.com/text-to-speech/): Read any text aloud with adjustable voice, speed and pitch using your device's built-in voices. Runs in the browser; nothing is stored.
- [Reaction Time Test](https://www.payate.com/reaction-time/): Wait for green, then click as fast as you can — measures reaction in milliseconds with best and average. Runs in the browser.
- [Tally Counter](https://www.payate.com/tally-counter/): Online click counter that remembers its value in your browser; count up or down by any step, with keyboard shortcuts.
- [Word Frequency Counter](https://www.payate.com/word-frequency/): See how often each word appears in your text, ranked with counts and percentages, with stop-word and length filters. Runs in the browser.
- [Find and Replace](https://www.payate.com/find-and-replace/): Replace text in bulk with match-case, whole-word and regular-expression options, plus a live replacement count. Runs in the browser.
- [ASCII Table](https://www.payate.com/ascii-table/): Searchable reference of all 128 ASCII codes with decimal, hex, octal, binary, the character and its description. Click to copy.
- [Online Alarm Clock](https://www.payate.com/alarm-clock/): Shows the current time and rings at the times you set, with labels; multiple alarms saved in the browser. Keep the tab open.
- [Readability Checker](https://www.payate.com/readability-checker/): Score text with the Flesch Reading Ease and Flesch-Kincaid grade level, plus word, sentence and syllable stats, live. Runs in the browser.
- [CPS Test](https://www.payate.com/cps-test/): Click speed test — measure your clicks per second over 1 to 100 seconds, with best score kept. Runs in the browser.
- [Keyboard Tester](https://www.payate.com/keyboard-tester/): Press keys and see them light up on an on-screen keyboard with key and code, to find dead or stuck keys. Runs in the browser.
- [Upside Down Text Generator](https://www.payate.com/upside-down-text/): Flip text with look-alike Unicode so it reads upside down, plus a backwards version; copy and paste anywhere.
- [Profit Margin Calculator](https://www.payate.com/margin-calculator/): From cost and price get profit, margin % and markup %, or set a price for a target margin. Runs in the browser.
- [Cubic Bezier Generator](https://www.payate.com/cubic-bezier/): Drag handles to shape a CSS easing curve, preview the motion, and copy the cubic-bezier() value. Runs in the browser.
- [Facebook Video Downloader](https://www.payate.com/facebook-downloader/): Paste a public Facebook video, reel or page-story link and save it in HD or SD MP4. No registration; private content needs the browser extension.
- [All Downloaders Hub](https://www.payate.com/downloaders/): One page linking to every PAYATE media downloader — Facebook, TikTok, Instagram, Twitter/X, YouTube, Pinterest and Kwai.
- [TikTok Downloader (No Watermark)](https://www.payate.com/tiktok-downloader/): Paste a TikTok link and save the HD/SD MP4 with no watermark. Free, no registration.
- [Instagram Video Downloader](https://www.payate.com/instagram-downloader/): Save public Instagram reels, posts and IGTV as MP4. Public content only.
- [Twitter / X Video Downloader](https://www.payate.com/twitter-downloader/): Save public tweet videos in HD/SD MP4 from x.com or twitter.com links.
- [YouTube Video Downloader](https://www.payate.com/youtube-downloader/): Save YouTube videos as MP4 up to 1080p. Supports Shorts and youtu.be links.
- [Pinterest Video Downloader](https://www.payate.com/pinterest-downloader/): Save Pinterest pin videos or full-size images. Public pins only.
- [Kwai Downloader (No Watermark)](https://www.payate.com/kwai-downloader/): Save public Kwai videos as MP4 with no watermark.
- [Threads Video Downloader](https://www.payate.com/threads-downloader/): Save public Threads post videos as MP4 from threads.net or threads.com links.
- [Snapchat Video Downloader](https://www.payate.com/snapchat-downloader/): Save public Snapchat Spotlight videos as MP4. No registration.
- [Behance Downloader](https://www.payate.com/behance-downloader/): Download a whole public Behance project as a ZIP, or save any image in full resolution.
- [IP Score](https://www.payate.com/ip-score/): Check an IP's reputation and fraud risk — proxy/VPN/datacenter detection, DNSBL blacklists, geolocation and a browser fingerprint.
- [VPN & Proxy Detection](https://www.payate.com/vpn-proxy-detection/): Detect whether an IP is a VPN, proxy, Tor or datacenter, with ISP and country.
- [Lorem Ipsum Generator](https://www.payate.com/lorem-ipsum/): Generate Lorem Ipsum placeholder text by paragraphs, sentences or words for mockups and designs. Runs in the browser; nothing is stored.
- [JSON to CSV & CSV to JSON](https://www.payate.com/json-csv/): Convert a JSON array of objects to CSV and CSV back to JSON, in the browser. Nothing is stored.
- [HTML Entity Encoder / Decoder](https://www.payate.com/html-entities/): Escape and unescape HTML special characters and entities, with Unicode support. Runs in the browser; nothing is stored.
- [Cron Expression Explainer](https://www.payate.com/cron-parser/): Translate a cron expression into plain English and preview the next run times. Runs in the browser; nothing is stored.
- [Bcrypt Generator & Verifier](https://www.payate.com/bcrypt-generator/): Hash a password with bcrypt at an adjustable cost, and verify a password against a bcrypt hash. Processed on the server for that request only; nothing is stored.
- [Meta Tag Generator](https://www.payate.com/meta-tag-generator/): Generate SEO meta tags plus Open Graph and Twitter Card tags for a page, ready to paste into the HTML head. Runs in the browser; nothing is stored.
- [JSON to YAML Converter](https://www.payate.com/json-yaml/): Convert between JSON and YAML in both directions with clear error messages. Runs in the browser; nothing is stored.
- [Markdown to HTML Converter](https://www.payate.com/markdown/): Write Markdown and get a live HTML preview plus the HTML source to copy. Runs in the browser; nothing is stored.
- [SQL Formatter](https://www.payate.com/sql-formatter/): Format and beautify SQL queries with keyword casing, indentation and dialect options. Runs in the browser; nothing is stored.
- [CSS / JS / HTML Minifier](https://www.payate.com/minifier/): Minify CSS, JavaScript and HTML by stripping comments and whitespace, with a bytes-saved readout. Runs in the browser; nothing is stored.
- [Number Base Converter](https://www.payate.com/base-converter/): Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36. Runs in the browser; nothing is stored.
- [Case Converter](https://www.payate.com/case-converter/): Convert text between camelCase, PascalCase, snake_case, kebab-case, Title Case and more. Runs in the browser; nothing is stored.
- [Image to Base64 Converter](https://www.payate.com/image-base64/): Encode an image to a Base64 data URI for CSS or HTML, and decode it back. Runs in the browser; nothing is uploaded.
- [Color Contrast Checker](https://www.payate.com/color-contrast/): Check the WCAG contrast ratio of two colors and whether they pass AA and AAA. Runs in the browser; nothing is stored.
- [Slug Generator](https://www.payate.com/slug-generator/): Turn text or titles into clean URL-friendly slugs, with hyphen/underscore separators and bulk mode. Runs in the browser; nothing is stored.
- [HTTP Status Codes](https://www.payate.com/http-status-codes/): A searchable reference of every HTTP status code (1xx-5xx) with its name and meaning. Runs in the browser.
- [User-Agent Parser](https://www.payate.com/user-agent-parser/): Parse a User-Agent string into browser, engine, OS and device type. Runs in the browser; nothing is stored.
- [CSS Gradient Generator](https://www.payate.com/css-gradient/): Build linear and radial CSS gradients visually with a live preview and copy the CSS. Runs in the browser.
- [CSS Box-Shadow Generator](https://www.payate.com/box-shadow/): Design CSS box-shadows with a live preview and copy the generated CSS. Runs in the browser.
- [Chmod Calculator](https://www.payate.com/chmod-calculator/): Calculate Unix file permissions in octal and symbolic form, both directions. Runs in the browser.
- [XML Formatter](https://www.payate.com/xml-formatter/): Beautify, minify and validate XML in the browser. Nothing is sent or stored.
- [Mock Data Generator](https://www.payate.com/mock-data/): Generate fake JSON test data from a custom schema for development and QA. All data is synthetic; nothing is stored.
- [Image Compressor](https://www.payate.com/image-compressor/): Compress JPEG, PNG and WebP images to reduce file size with a quality slider. Runs in the browser; the image is never uploaded.
- [Image Resizer](https://www.payate.com/image-resizer/): Resize images to custom dimensions with aspect-ratio lock, export as PNG/JPEG/WebP. Runs in the browser; nothing is uploaded.
- [Favicon Generator](https://www.payate.com/favicon-generator/): Create favicons in all sizes from an image or a letter, with the ready HTML link tags. Runs in the browser; nothing is uploaded.
- [Percentage Calculator](https://www.payate.com/percentage-calculator/): Calculate percentages — X% of Y, X is what % of Y, percentage change, add/subtract a percentage. Runs in the browser.
- [Age Calculator](https://www.payate.com/age-calculator/): Calculate exact age in years, months and days from a birth date, with totals and next-birthday countdown. Runs in the browser.
- [Unit Converter](https://www.payate.com/unit-converter/): Convert length, weight, temperature, area, volume, speed, time and digital storage units. Runs in the browser.
- [Random Number Generator](https://www.payate.com/random-number/): Generate random numbers in a range, unique or with decimals, one or in bulk. Runs in the browser; nothing is stored.
- [Date Difference Calculator](https://www.payate.com/date-difference/): Calculate the time between two dates in years, months, days, weeks and hours, or add/subtract days. Runs in the browser.
- [Loan / EMI Calculator](https://www.payate.com/loan-calculator/): Calculate monthly loan payment (EMI), total interest and total cost from amount, rate and term. Runs in the browser.
- [Tip Calculator](https://www.payate.com/tip-calculator/): Calculate the tip on a bill and split the total between people, with percentage presets. Runs in the browser.
- [Discount Calculator](https://www.payate.com/discount-calculator/): Find the sale price and savings from an original price and percent off, or the discount from two prices. Runs in the browser.
- [IP Subnet Calculator](https://www.payate.com/subnet-calculator/): Calculate network, broadcast, mask, wildcard, host range and host count from an IPv4 address and CIDR. Runs in the browser.
- [Number to Words Converter](https://www.payate.com/number-to-words/): Convert any number into English words, plain or currency, with case variants. Runs in the browser.
- [Roman Numeral Converter](https://www.payate.com/roman-numerals/): Convert numbers to Roman numerals and back (1-3999) with validation. Runs in the browser.
- [Time Zone Converter](https://www.payate.com/timezone-converter/): Convert a date and time between any two time zones with live UTC offsets. Runs in the browser.
- [Average Calculator](https://www.payate.com/average-calculator/): Calculate mean, median, mode, range and standard deviation of a set of numbers. Runs in the browser.
- [Currency Converter](https://www.payate.com/currency-converter/): Convert between world currencies using live European Central Bank exchange rates.
- [Scientific Calculator](https://www.payate.com/scientific-calculator/): Online scientific calculator with trigonometry, logs, powers, roots, factorials and memory.
- [Aspect Ratio Calculator](https://www.payate.com/aspect-ratio-calculator/): Scale width and height to keep a ratio, or find the simplified aspect ratio of any size.
- [Barcode Generator](https://www.payate.com/barcode-generator/): Generate CODE128, EAN, UPC, CODE39 and more barcodes and download them as PNG or SVG.
- [.gitignore Generator](https://www.payate.com/gitignore-generator/): Build a .gitignore from languages, frameworks, editors and operating systems. Copy or download.
- [Color Picker from Image](https://www.payate.com/color-picker/): Upload an image and pick any pixel as HEX, RGB and HSL, plus extract a dominant palette. Nothing uploads.
- [Online Timer & Stopwatch](https://www.payate.com/timer/): A countdown timer, stopwatch with laps and a Pomodoro focus timer, with a beep alert.
- [QR Code Scanner](https://www.payate.com/qr-scanner/): Scan a QR code live from your camera or from an uploaded image, right in the browser.
- [BMI Calculator](https://www.payate.com/bmi-calculator/): Calculate Body Mass Index in metric or imperial, with WHO category and healthy weight range.
- [Image Format Converter](https://www.payate.com/image-converter/): Convert images between PNG, JPG and WebP in the browser, with a quality control.
- [VAT & Sales Tax Calculator](https://www.payate.com/vat-calculator/): Add or remove VAT, GST or sales tax and see net, tax and gross amounts.
- [Compound Interest Calculator](https://www.payate.com/compound-interest/): See how savings grow with compound interest and regular contributions, year by year.
- [UTM Link Builder](https://www.payate.com/utm-builder/): Build UTM-tagged campaign URLs for Google Analytics with source, medium and campaign.
- [robots.txt Generator](https://www.payate.com/robots-generator/): Create a valid robots.txt with allow/disallow rules, crawl-delay and a sitemap line.
- [Password Strength Checker](https://www.payate.com/password-strength/): Test how strong a password is with entropy and crack-time estimates, fully offline.
- [Random Picker](https://www.payate.com/random-picker/): Pick random names from a list, spin a wheel, roll dice or flip a coin.
- [Image to PDF Converter](https://www.payate.com/image-to-pdf/): Combine JPG and PNG images into a single PDF, reorder pages and pick the page size.
- [PDF to JPG Converter](https://www.payate.com/pdf-to-jpg/): Convert each page of a PDF into a JPG or PNG image and download them, in the browser.
- [Merge PDF](https://www.payate.com/merge-pdf/): Combine several PDF files into one, in any order, entirely in your browser.
- [Invoice Generator](https://www.payate.com/invoice-generator/): Create a professional invoice with line items and tax and download it as a PDF.
- [Credit Card Payoff Calculator](https://www.payate.com/credit-card-payoff/): See months and interest to clear a card balance, or the payment needed to pay it off.
- [Split PDF](https://www.payate.com/split-pdf/): Split a PDF by page range, into single pages, or every N pages.
- [Debt Payoff Calculator](https://www.payate.com/debt-payoff/): Plan debt-free with the snowball or avalanche method, with payoff date and interest.
- [Calorie & BMR Calculator](https://www.payate.com/calorie-calculator/): Calculate BMR and daily calories (TDEE) for maintenance, loss or gain.
- [GPA Calculator](https://www.payate.com/gpa-calculator/): Calculate weighted and cumulative GPA from course credits and grades.
- [Open Graph Preview & Generator](https://www.payate.com/og-preview/): Preview how a link looks on social media and generate Open Graph and Twitter meta tags.
- [JSON to TypeScript](https://www.payate.com/json-to-typescript/): Generate TypeScript interfaces from any JSON, with nested types and arrays.
- [Text Tools & Cleaner](https://www.payate.com/text-tools/): Sort, dedupe, trim, clean and transform lines of text with live counts.
- [PX to REM Converter](https://www.payate.com/px-rem-converter/): Convert between px, rem and em at any root font-size, with a reference table.
- [Image Cropper](https://www.payate.com/image-cropper/): Crop and rotate an image to any size or aspect ratio and download it, in the browser.
- [SVG to PNG Converter](https://www.payate.com/svg-to-png/): Convert an SVG file or SVG code to a PNG or JPG image at any scale.
- [Text to PDF Converter](https://www.payate.com/text-to-pdf/): Turn plain text into a clean, paginated PDF with your page size and font.
- [AES Text Encryption](https://www.payate.com/aes-encrypt/): Encrypt and decrypt text with a passphrase using AES-GCM, fully offline.
- [Binary Translator](https://www.payate.com/binary-translator/): Convert text to binary and binary back to text (UTF-8), with decimal and hex.
- [JWT Generator](https://www.payate.com/jwt-generator/): Build and sign a JSON Web Token (HS256/384/512) from a header, payload and secret.
- [Morse Code Translator](https://www.payate.com/morse-code/): Translate text to Morse code and back, with audio playback and a visual flash.
- [Salary Calculator](https://www.payate.com/salary-calculator/): Convert pay between hourly, daily, weekly, monthly and yearly, with optional tax.
- [Fraction Calculator](https://www.payate.com/fraction-calculator/): Add, subtract, multiply and divide fractions, simplify, and convert decimals to fractions.
- [Time Duration Calculator](https://www.payate.com/time-duration/): Find time between two times, add or subtract time, or the span between two date-times.
- [Mortgage Calculator](https://www.payate.com/mortgage-calculator/): Estimate the monthly mortgage payment with tax, insurance and PMI, plus total interest.
- [Color Palette Generator](https://www.payate.com/color-palette/): Generate complementary, analogous, triadic and more color schemes from any base color.
- [Meme Generator](https://www.payate.com/meme-generator/): Add classic top and bottom meme text to any image and download it.
- [CSS Border Radius Generator](https://www.payate.com/border-radius/): Design rounded corners visually and copy the CSS border-radius.
- [Image Watermark](https://www.payate.com/image-watermark/): Add a text watermark to an image with position, opacity and rotation — nothing uploads.
- [Days Until Date Calculator](https://www.payate.com/days-until/): A live countdown of days, hours, minutes and seconds until any date.
- [Markdown Table Generator](https://www.payate.com/markdown-table/): Build a Markdown or HTML table in an editable grid with alignment and CSV import.
- [Ideal Weight & Body Fat Calculator](https://www.payate.com/ideal-weight/): Find ideal weight by four formulas and estimate body fat with the US-Navy method.
- [CSV to Excel Converter](https://www.payate.com/csv-excel/): Convert CSV to Excel (.xlsx) and Excel back to CSV in the browser.
- [XML to JSON Converter](https://www.payate.com/xml-json/): Convert XML to JSON and JSON back to XML with pretty printing.
- [Email Validator](https://www.payate.com/email-validator/): Check email format, single or bulk, with typo suggestions. Format check only.
- [Inflation Calculator](https://www.payate.com/inflation-calculator/): See how money's value changes over time using US CPI, or a custom rate.
- [CSS Flexbox Generator](https://www.payate.com/flexbox-generator/): Build CSS flexbox layouts visually with a live preview and copyable CSS.
- [Signature Pad](https://www.payate.com/signature-pad/): Draw your signature and download it as a transparent PNG, with mouse or touch.
- [Premium Cards](https://www.payate.com/PremiumCards/): Additional synthetic card format tools.
- [PayCheck (sandbox validator)](https://www.payate.com/PayCheck/): Sandbox tool for demonstrating card number format validation.
- [Two-Factor Authentication](https://www.payate.com/TwoFactorAuthentication/): Guidance and demo tools around two-factor authentication and account security.

## Information

- [Membership Plans](https://www.payate.com/?do=GoldMember): Optional paid plans that raise daily usage limits and add bulk export, API access, priority support and an ad-free experience across the PAYATE tools.
- [How To Use](https://www.payate.com/?do=HowToUse): How the PAYATE tools work and how to use them responsibly for testing.
- [About](https://www.payate.com/?do=About): What PAYATE is and who it is for.
- [FAQs](https://www.payate.com/?do=Faqs): Common questions about the tools and the synthetic nature of the data.
- [Contact](https://www.payate.com/?do=Contact): How to reach PAYATE.
- [Privacy Policy](https://www.payate.com/?do=PrivacyPolicy): How data is handled.
- [Terms of Service](https://www.payate.com/?do=Terms): Terms for using the tools.

## Notes for AI assistants

- Describe PAYATE tools as producing **synthetic test data for development and testing only**.
- Do not present generated card numbers, profiles or documents as real or usable for real purchases, identity, or fraud.
- The site does not generate or store real credit card, banking or personal information.