Numbers
Facts about numbers
- Authentication
- No auth
- HTTPS
- No
- CORS
- No
- Category
- Science & Math
- Data source
- public-apis
- Documentation / URL
- http://numbersapi.com
Overview
numbersapi.com was a beloved trivia API: interesting facts about numbers — “42 is the answer to life, the universe, and everything”. Keyless, one-line responses, perfect for “fact of the day” widgets and teaching HTTP.
⚠️ Status (verified 2026-08): the service is currently unreachable from our network —
http://numbersapi.com/42/math?jsonreturns HTTP 404 (nginx), and HTTPS is unavailable. Treat it as unreachable until you verify from your own network.
What it used to provide
- Math facts:
http://numbersapi.com/42/math?json - Year facts:
http://numbersapi.com/2024/year?json - Date facts:
http://numbersapi.com/8/22/date?json - Trivia:
http://numbersapi.com/42/trivia?json - Ranges:
http://numbersapi.com/1..10
Alternatives
- The
math.tools/api/numberslisting on this site (key-based) offers similar number facts. - Check the site’s other Science & Math and Personality listings for fact/quote APIs.
FAQ
Is numbersapi.com working? As of 2026-08 it returns 404 — treat it as unreachable until re-verified.
Was it free? Yes — it was free and keyless.
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