TimeZoneDB
Time & Location Free key (no card)
AuthenticationFree key (no card)
Rate limitUnlimited total queries at up to 1 request per second; free key for personal/non-commercial use.
Documentation: timezonedb.com ยท Checked Sep 13, 2026
About
TimeZoneDB converts any city, coordinates, or IP address into the correct local time, UTC offset, and daylight-saving status. It answers unlimited queries at a polite pace, and the free key is only asked for personal or non-commercial use. The API also lists every time zone in the world for reference.
Details
Free to start. You may need a free key, but no credit card.
Auth: Free key (no card)
Rate limit: Unlimited total queries at up to 1 request per second; free key for personal/non-commercial use.
Verified: 2026-09-13
Best for: personal developer business
Setup
- Register for a free TimeZoneDB account and copy your API key.
- Call get-time-zone with by=position plus lat/lng. Or by=city, by=zone, or by=ip.
- Read local time from formatted, and the offset from gmtOffset.
- Keep requests to one per second; cache time zone lookups since they rarely change.
Example
https://api.timezonedb.com/v2.1/get-time-zone?key=YOUR_KEY&format=json&by=position&lat=34.05&lng=-118.24Use cases
- Show 'your time / their time' on a meeting scheduler
- Convert flight arrival times to the traveler's home zone
- Stamp user activity with the correct local time