Timezone Converter

Convert time between timezones instantly. Free online timezone converter with all IANA zones, DST support, and common city pairs.

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Common city pairs

How It Works

  1. Select a source time zone from the dropdown list.
  2. Select a target time zone.
  3. Enter the time you want to convert.
  4. The converted time appears instantly, including the UTC offset for both zones.

Formula

Target Time = Source Time + (Target UTC Offset − Source UTC Offset)

Example

Input: New York: 10:00 AM (EDT, UTC−4)
Result: London: 3:00 PM (BST, UTC+1)

FAQ

All major IANA time zones worldwide are supported, including regions that observe non-standard offsets.

Yes — daylight saving time is applied automatically based on the selected date, so you always get the correct offset.

No. All calculations run entirely in your browser. No data is sent to or stored on our servers.

UTC (Coordinated Universal Time) is the global time standard. All time zones are expressed as offsets from UTC, such as UTC+2 or UTC−5.