Timezone Converter
Know the time anywhere in the world. Pick a time, select two zones, get the conversion instantly.
00:21UTC
±0hDifference
00:21UTC
UTCTue, Mar 17, 2026Currently: 24:21
00:21UTCTue, Mar 17, 2026Currently: 24:21
00:21How the Timezone Converter Works
Enter the time you want to convert, select the source timezone, then select the destination timezone. The tool calculates the UTC offset difference between the two zones using the browser's built-in Intl.DateTimeFormat API — no external API calls needed.
Your local timezone is detected automatically. The current time in each timezone is shown so you can quickly verify the results. Use the Swap button to reverse the conversion direction.
Frequently Asked Questions
Does this tool account for Daylight Saving Time (DST)?
Yes. The tool uses the browser's Intl.DateTimeFormat API, which automatically applies the correct DST rules for each timezone based on the current date. The offsets you see already account for whether DST is currently active.
What timezones are supported?
The tool includes 19 common timezones grouped by region: Americas (9 zones including New York, Chicago, Los Angeles, Toronto, São Paulo), Europe (6 zones), Asia (6 zones), Pacific (2 zones), and UTC.
Why does my timezone show a fractional hour offset?
Some timezones have non-integer UTC offsets. For example, India Standard Time (IST) is UTC+5:30, and Nepal Time is UTC+5:45. This is a historical convention that has been preserved to this day.
How is the time difference calculated?
The tool calculates the UTC offset of each selected timezone and subtracts them. For example, if New York is at UTC-5 and Paris is at UTC+1, the difference is +6 hours — meaning Paris is 6 hours ahead of New York.
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