timecalculator.app valid

Time Calculator Cardamon

A free time-duration calculator. Type a natural expression such as "5h 30m + 2h 15m" or "2 days - 4h" and get the result instantly. The same calculation engine powers the Android and iOS apps, so results match across web and mobile.

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-25T19:21:11.389Z. Cached copy · Source on timecalculator.app

# Time Calculator Cardamon

> A free time-duration calculator. Type a natural expression such as "5h 30m + 2h 15m" or "2 days - 4h" and get the result instantly. The same calculation engine powers the Android and iOS apps, so results match across web and mobile.

## Facts
- Maker: Cardamon (contact: support@cardamon.org)
- Author & founder: Dmitrii Kargashin, solo founder of Cardamon Inc and the developer of Time Calculator (https://www.linkedin.com/in/dmitriy-kargashin)
- Rating: 4.6/5 from 391 ratings on Google Play
- Units: years, months, weeks, days, hours, minutes, seconds, milliseconds
- Operators (web, extension, any keyboard): + - * / (multiply and divide by a plain number only); every number needs a unit. The mobile keypad also offers × and ÷ keys.
- Reference: 1 day = 24 hours = 1,440 minutes = 86,400 seconds; 1 week = 7 days; 1 hour = 60 minutes; 1 minute = 60 seconds = 60,000 ms; 1 second = 1,000 ms
- Pricing: web is free (ad-supported); Android is free with no ads; iOS unlocks the full app with a Pro purchase

## Pages
- [Time Calculator (home)](https://www.timecalculator.app/): the web calculator, how it works, unit conversions, FAQ, and reviews
- [Guides](https://www.timecalculator.app/guides): step-by-step how-to guides for common time-math jobs
- [How do I add up hours and minutes?](https://www.timecalculator.app/guides/add-hours-and-minutes): Add up hours and minutes in one line. Type each duration like 8h 15m, join them with +, and pick a format. Free time calculator for timesheets, web and apps.
- [How do you calculate hours worked between two times?](https://www.timecalculator.app/guides/hours-worked-between-two-times): Calculate hours worked between two clock times. Write each time as hours and minutes from midnight, then subtract: 17h 45m - 9h 15m gives 8 Hours 30 Minutes.
- [How do I add and subtract time durations across units?](https://www.timecalculator.app/guides/add-and-subtract-time): Add and subtract time across hours, minutes, days, and weeks in one line. Type "2 days - 4h" and read the result in any format. Free, no conversion needed.
- [How do I total the hours on a weekly timesheet?](https://www.timecalculator.app/guides/timesheet-total-hours): Add up your weekly timesheet or time card hours in seconds. Type each day as hours and minutes, hit plus, and get a clean Hour Minute total. Free, in your browser.
- [How do I multiply or split a time duration?](https://www.timecalculator.app/guides/multiply-and-divide-time): Multiply or split a time duration in seconds. Type "8h 15m × 3" to repeat a block or "1 day ÷ 4" to divide it evenly. Free, right in your browser.
- [How do I convert between time units like minutes to seconds or hours to minutes?](https://www.timecalculator.app/guides/convert-time-units): Convert minutes to seconds, hours to minutes, seconds to hours, and milliseconds with a free time calculator. Type the duration, pick an output format, done.
- [Convert Time to Decimal Hours](https://www.timecalcul
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Machine-readable: GET /v1/resolve?q=timecalculator.app · GET /v1/domain/timecalculator.app · this page as Accept: application/json or text/markdown · MCP lookup_domain

Automatically discovered from public files. Inclusion does not imply endorsement or publisher participation.

Claim my listing on Agent Web Map for timecalculator.app:
1. POST https://agentwebmap.com/v1/sites/timecalculator.app/claims and keep claim_id and claim_secret private.
2. Publish the verification line "AgentWebMap verification: <token>" (token from step 1) in https://timecalculator.app/llms.txt, or use the DNS, meta-tag or well-known method the response describes. This only verifies the listing; your website and domain remain yours.
3. POST https://agentwebmap.com/v1/sites/timecalculator.app/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/timecalculator.app).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verify

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