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Time Zone Converter

Convert a date and time from one time zone to over 20 major time zones at once, correctly handling daylight saving time.

Runs entirely in your browser — your files are never uploaded to a server.

Last updated

This tool processes your input entirely in your browser. Nothing is sent to our servers.

How It Works

1. Choose Your File

Drag & drop or select the file you want to work with.

2. Processed in Your Browser

Everything happens locally on your device — your file is never uploaded anywhere.

3. Download Your Result

Get your finished file instantly, ready to save or share.

About Time Zone Converter

Converting a time between time zones matters constantly for scheduling across distances — a meeting time, a live event, a deadline — and gets genuinely error-prone when daylight saving time is involved.

This tool accounts for daylight saving time automatically rather than assuming a fixed offset between time zones, since the actual offset between two zones can change depending on the time of year and each region’s own DST rules.

Useful for confirming an exact meeting time across time zones without manually tracking which regions currently observe daylight saving time and which don’t.

Frequently Asked Questions

How do I convert time zones?

Pick the date and time, choose the source time zone, and the tool instantly lists that moment in all 22 supported zones. It applies daylight saving rules for the date you choose, so winter and summer conversions both come out correctly.

How do I calculate time zones?

By hand, find each place's offset from UTC, then add or subtract the difference, remembering daylight saving changes the offset for part of the year. This tool does that for you across a fixed list of zones, including UTC, the US, Europe, Asia, Sydney and Auckland.

How do I plan a meeting across different time zones?

Enter the proposed time in your own zone and read down the list to see what it is for everyone else. Check that each person's time is within reasonable working hours, and adjust until it fits. Note the displayed date, which can differ by a day.

Which time zones does the converter support?

It covers 22 fixed zones, including UTC, six US and Canadian zones, Mexico City, Sao Paulo, London, Paris, Berlin, Madrid, Moscow, Dubai, Kolkata, Shanghai, Tokyo, Singapore, Seoul, Sydney and Auckland. There is no city search, and zones outside the list, such as Africa, are not available.

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