Timezone Converter API - Free Time Conversion
Converts a datetime from one IANA timezone to another. Returns both formatted datetimes and the offset difference.
Code examples
curl -X POST https://api.botoi.com/v1/timezone/convert \
-H "Content-Type: application/json" \
-d '{"datetime":"2026-03-24T10:30:00","from":"America/New_York","to":"Asia/Tokyo"}'When to use this API
Coordinate meetings across global teams
When a user picks a meeting time in their local timezone, convert it to each attendee's timezone and display the local time next to their name. Show a warning if the meeting falls outside 8am-8pm for any participant.
Normalize event timestamps for a unified calendar
Import calendar events from different services that store times in various timezones. Convert every event to the user's local timezone before rendering them on a single calendar view, ensuring correct chronological ordering.
Calculate business-hours overlap between offices
For a distributed company with offices in New York, London, and Singapore, convert 9am-5pm from each office timezone to a common reference. Display the overlap window where all three offices are online.
Frequently asked questions
Does the conversion handle daylight saving transitions?
What datetime format should I use for the time parameter?
What is offset_diff?
Can I convert to or from UTC?
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