Best Free Time Zone Converter
Convert a time across cities worldwide at once, with daylight-saving handled automatically. Free, no signup.
100% free
No signup
No watermark
Files processed in memory, never stored
✨
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How it works
- Set the moment. Choose a date and time and the source time zone it belongs to (or press Use now).
- Read it everywhere. The same instant is shown across each target zone, updating live as you type.
- Tune the list. Open Advanced options to add or remove zones, then remove any row you do not need.
About this tool
Pick a date, a time and the zone it is in, and see that exact moment across cities around the world at a glance — handy for scheduling a call, a launch or a livestream across borders. It uses your browser built-in Intl time-zone database, so daylight-saving shifts are handled automatically and the results update live as you type. Common zones are shown by default (UTC, New York, Los Angeles, London, Tokyo, Kolkata and more), and the Advanced options let you add or remove exactly the zones you care about.
What people use it for
- Schedule a call across several countries
- Find a meeting time that works for a global team
- Check when a launch or stream lands in other zones
- Plan around daylight-saving differences without doing the math
Frequently asked questions
It uses your browser built-in IANA time-zone database (the Intl API), the same data operating systems use, so each city offset is correct for the date you pick.
Yes, automatically. Because it converts a specific date and time, it applies whatever DST rule was in effect for each zone on that date.
A list of common zones across the Americas, Europe, Africa, Asia and Oceania is built in, and you can add or remove any of them.
Open Advanced options to pick a zone and add it, and use the small ✕ on any row to take a zone out.
Yes. As soon as you change the date, time or source zone, every shown zone recalculates live — there is no convert button.
No. The conversion runs entirely in your browser using local time-zone data.
Yes — Time Zone Converter is completely free, with no watermark on the output and no credit card required.
Yes. It runs in your browser, so Time Zone Converter works on phones and tablets as well as desktop — there is no app to install.
No. Time Zone Converter works with no signup at all; an optional free account only exists to unlock higher usage limits.
Usually just a few seconds for a typical file — Time Zone Converter starts working the moment you give it your input.