Time Zone Converter

The same moment, anywhere in the world — with the exact offset difference.

FREE TOOL · WORKS OFFLINE · NO SIGN-UP

The date and time start at right now — change them to convert any past or future moment.

Converted time
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Difference
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You entered
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Same moment in UTC
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UTC offsets (from → to)
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🕐 How to Use This Time Zone Converter

  1. 1.Set the date and time. The field starts at the current moment, but any past or future date works — flight times, meeting invites, launch windows.
  2. 2.Pick the "from" zone. That is the zone the time you typed is written in — for a New York meeting invite, choose New York.
  3. 3.Pick the "to" zone. The converted time appears instantly, using the daylight-saving rules in force on that exact date.
  4. 4.Swap with one click. The swap button exchanges the two zones so you can check the reverse direction just as fast.
  5. 5.Read the difference line. It tells you how far ahead or behind the target zone is, so you can sanity-check any converted time at a glance.

❓ FAQ

How does this time zone converter work?

Enter a date and time, pick the zone that time belongs to, then pick the zone you want to see it in. The tool finds the exact UTC instant using your browser's built-in time zone database (the Intl API) and shows the same moment in the target zone — no server, no lookup tables to go stale.

Does it handle daylight saving time?

Yes. The conversion uses the real rules for the date you picked, including daylight saving time. For example, 12:00 noon in New York is 22:30 in Kolkata in January (EST, UTC-5) but 21:30 in July (EDT, UTC-4) — the difference changes because New York springs forward and India does not.

What does 'ahead' or 'behind' mean?

It compares the two zones' UTC offsets at that moment. If the target zone is ahead, its clocks show a later time than the source zone for the same instant — Kolkata is 10 hours 30 minutes ahead of New York in winter, so noon in New York is already evening in India.

Is this time zone converter free?

Yes — 100% free, no sign-up. The conversion runs entirely in your browser; the date and time you enter are never uploaded, saved or tracked.

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