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Convert time between time zones: enter time and select from and to zones — see converted time and offset.
Convert time between time zones: enter time and select from and to zones — see converted time and offset.
Enter values above and click Calculate — results will appear here with the formula explained.
Time zone conversion maps wall-clock time through UTC offsets that include both base offset and daylight saving adjustments which shift twice yearly for many regions. The calculator stores IANA zone identifiers and applies the DST rule valid on the date you convert, so a 9:00 AM meeting in New York is correctly 14:00 in London in January but 13:00 in July when British Summer Time adds an hour. Historical shifts are honored through the zone database rather than a fixed offset table, avoiding the common error of applying summer offsets to winter dates.
Always convert through UTC, not peer-to-peer, and schedule across zones with a shared UTC timestamp plus each local label — invite text that reads 2026-03-10 14:00 UTC (10:00 New York / 15:00 London) eliminates ambiguity even when a participant's calendar reinterprets the event.
Convert time between time zones: enter time and select from and to zones — see converted time and offset. Formula: Converted = time - fromOffset + toOffset (in minutes, mod 24h). Example: 14:30 in EST (UTC-5) to PST (UTC-8): difference -3h, so 11:30 in PST.
Time zone conversion maps wall-clock time through UTC offsets that include both base offset and daylight saving adjustments which shift twice yearly for many regions. The calculator stores IANA zone identifiers and applies the DST rule valid on the date you convert, so a 9:00 AM meeting in New York is correctly 14:00 in London in January but 13:00 in July when British Summer Time adds an hour. Historical shifts are honored through the zone database rather than a fixed offset table, avoiding the common error of applying summer offsets to winter dates.
Always convert through UTC, not peer-to-peer, and schedule across zones with a shared UTC timestamp plus each local label — invite text that reads 2026-03-10 14:00 UTC (10:00 New York / 15:00 London) eliminates ambiguity even when a participant's calendar reinterprets the event.
14:30 in EST (UTC-5) to PST (UTC-8): difference -3h, so 11:30 in PST.
Formulas are standard public references (see our methodology). External standards are cited in the text where they apply.
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