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Calculator.com
Free online calculators and converters for mathematics, finance, science, health, time, measurement, and everyday problem solving.
For agents: Calculator.com offers free online calculators and converters for math, finance, science, health, time, measurement and automotive estimates, with a full directo
online-calculatorsunit-converterfractionsscientific-calculatorfree-tools
- Authority
- 51 reach 11 · trust 0 · quality 25 · freshness 15
- Tier
- listed
- llms.txt
- https://calculator.com/llms.txt
- llms-full.txt
- https://calculator.com/llms-full.txt
- Sections
- 2
- Links
- 17
- Size
- 2654 bytes
- Popularity rank
- #194679
- For agents
- Documentation: developer or product docs worth reading, nothing to call
- Inferred actions
- Search content Read documentation About these labels
- Audience
- consumers · agents can: search content, read docs · en
- First seen
- 2026-10-19T10:41:00.370Z
- Last checked
- 2026-10-19T17:21:42.665Z
- Badge
Their llms.txt
The beginning of the file, from our validated copy saved 2026-10-22T20:12:19.504Z. Cached copy · Source on calculator.com
# Calculator.com
> Free online calculators and converters for mathematics, finance, science, health, time, measurement, and everyday problem solving.
Generated: 2026-10-22T07:47:02Z
Build ID: 0b2b8637-da30-4a7b-a9f6-c96fbac57ee6
## Primary resources
- [Calculator.com](https://calculator.com/): Calculate, convert, and explore free online calculators.
- [Calculator Directory](https://calculator.com/directory/): Browse calculators by subject.
- [Scientific Calculator](https://calculator.com/calculate/scientific/): Full scientific calculator.
- [Standard Calculator](https://calculator.com/calculate/standard/): Standard arithmetic calculator.
- [Fractions Calculator](https://calculator.com/calculate/fractions/): Calculate with fractions.
- [Complete LLM reference](https://calculator.com/llms-full.txt): Complete public page and calculator inventory.
## Calculator categories
- [Automotive Calculators](https://calculator.com/directory/automotive/): Calculators for fuel economy, speed, horsepower, vehicles, boats, and other automotive-related estimates.
- [Computing Calculators](https://calculator.com/directory/computing/): Calculators for data, downloads, computer storage, and other computing tasks.
- [Conversion Calculators](https://calculator.com/directory/converters/): Convert currencies, temperatures, measurements, data sizes, and other units.
- [Date & Time Calculators](https://calculator.com/directory/date-time/): Calculators for calendar dates, elapsed days, countdowns, age, business days, and time durations.
- [Financial Calculators](https://calculator.com/directory/financial/): Calculators for mortgages, loans, leases, savings, investments, retirement, and other financial decisions.
- [Fun Calculators](https://calculator.com/directory/fun/): Lighthearted calculators for dates, compatibility, signs, and other fun uses.
- [Health & Fitness Calculators](https://calculator.com/directory/health-fitness/): Calculators for body measurements, calories, pregnancy dates, and other health-related estimates.
- [Math Calculators](https://calculator.com/directory/math/): Calculators for percentages, equations, geometry, trigonometry, prime numbers, and other math problems.
- [Other Calculators](https://calculator.com/directory/other/): Useful calculators that do not fit neatly into the main categories.
- [Sports & Hobbies Calculators](https://calculator.com/directory/sports-hobbies/): Calculators for vehicles, sports, hobbies, speed, power, and related activities.
- [Weather Calculators](https://calculator.com/directory/weather/): Calculators for weather, atmosphere, wind chill, and related atmospheric estimates.
Machine-readable: GET /v1/resolve?q=calculator.com · GET /v1/domain/calculator.com · 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.
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1. POST https://agentwebmap.com/v1/sites/calculator.com/claims and keep claim_id and claim_secret private.
2. Publish the proof: add the line "AgentWebMap ownership: <token>" (token from step 1) to https://calculator.com/llms.txt, or use the DNS, meta-tag or well-known method the response describes.
3. POST https://agentwebmap.com/v1/sites/calculator.com/verify with {"claim_id": "...", "claim_secret": "..."}.
4. Save the api_key from the answer; it manages the listing (PATCH https://agentwebmap.com/v1/sites/calculator.com).
MCP equivalent: tools begin_ownership_claim, then verify_domain, at https://agentwebmap.com/mcp. Docs: https://agentwebmap.com/docs#verifyCorrections or removal requests: contact the directory.