Date & Time
Time Zone Converter
Convert times between searchable IANA time zones.
America/New_York to Asia/Kolkata. Same calendar day.
Destination timezone
Asia/Kolkata
Destination UTC offset
UTC+5:30
Source UTC offset
UTC-4
ISO 8601 instant
2026-08-30T14:00:00.000Z
About This Tool
Convert a source date and time into another timezone using browser-native IANA timezone data, including offset changes caused by daylight saving time.
How To Use It
- Enter the date and clock time.
- Choose the source and destination time zones.
- Check the converted time, UTC offsets, and day shift.
Examples
Schedule across regions
Convert 9:00 AM in New York to London or Tokyo time before sending a meeting invite.
Check a launch time
Translate a webinar, release, or livestream time from the host city into the audience timezone.
Useful Notes
Timezone database
The converter relies on the browser runtime's IANA timezone data, so daylight-saving changes are handled by the platform.
Date matters
Offsets can change during the year, so the same cities may be a different number of hours apart in winter and summer.
FAQ
Does this use fixed offsets like EST equals UTC-5?
No. It uses IANA timezone identifiers and runtime timezone rules, including daylight saving where applicable.
Why did the converted date move forward or backward?
A timezone conversion can cross midnight. The day shift indicates whether the destination time lands on the previous or next calendar date.
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