Converters / TOOLKIT
Time Zone Converter
Convert a wall-clock time in the selected source zone. Skipped times are rejected; repeated times require an occurrence choice.
Free to use · No account needed
Convert a meeting time
- Select the source zone and enter its local date and time.
- Select the destination zone. The result includes its date and UTC offset.
- If the source time occurs twice, explicitly choose the earlier or later occurrence. If the clock skipped it, choose another time.
Worked examples
| Source | Destination |
|---|---|
| New York: 2026-07-15 09:00 | Shanghai: 2026-07-15 21:00 |
| New York: 2026-01-15 09:00 | Shanghai: 2026-01-15 22:00 |
| UTC: 2026-01-15 23:30 | Kathmandu: 2026-01-16 05:15 |
Changing the date can change the offset. The converter uses the selected source zone even when your device is elsewhere.
Daylight-saving gaps and repeated hours
In New York, 2026-03-08 02:30 is skipped when clocks move forward. It has no matching instant. On 2026-11-01, 01:30 occurs twice: at 05:30 UTC and 06:30 UTC. Choose which occurrence the meeting organizer intends.
The live world clock starts from the current instant and therefore does not need this choice. Conversion starts from a local clock reading, which can be ambiguous.
Scope, privacy and future dates
The selection contains 27 IANA zones, including Kathmandu, Adelaide and Lord Howe. The supported calendar range is 1900–2100. This is a one-source, one-destination converter; it does not create calendar invitations or optimize team availability.
Your browser supplies the time-zone rules. Keep it updated and recheck future appointments if local law changes. Date input is processed on this device. Optional analytics follows your privacy choice. A fresh offline visit is not guaranteed.
Sources and reproducible checks
IANA Time Zone Database explains rule updates. ECMAScript Intl.DateTimeFormat specifies zone-based formatting. Reviewed October 11, 2026 against the implemented controls. Browser regression cases cover multiple device zones, date rollover, leap days and one-hour and half-hour DST boundaries.