Convert a time between time zones with DST handled — pick explicit zones, never host-timezone guesses.
The entered time is read as wall-clock time in the "from" timezone (never your browser timezone), then converted — daylight saving included.
How to use this tool
This is wall-clock time in the "from" timezone.
16 common zones are listed, from UTC to Auckland.
The converted wall-clock time appears instantly.
The underlying instant is shown so you can verify it anywhere.
Formula & worked example
12:00 on 15 January 2026 in UTC is 07:00 in New York (EST, UTC−5) and 17:00 in Karachi (PKT, UTC+5). In July the same UTC noon is 08:00 in New York (EDT, UTC−4).
Limitations — read this before you rely on it
Timezone data comes from the visitor’s browser (ICU/CLDR); extremely old browsers may lack some zones and will report an error rather than a wrong answer. Times in DST transition gaps or ambiguities are resolved to the nearest real instant.
Frequently asked questions
Yes — offsets come from the browser’s Intl timezone database, which includes DST rules.
Because you then say which timezone that time belongs to; the tool never guesses from your device.
The offset correction lands on the nearest real instant; check the UTC instant shown if the time falls in a spring-forward gap.
Yes — Pakistan Standard Time has no daylight saving.
Yes — historical offsets from the Intl database are used, though very old rules vary by browser.