Tiny Toolkit

Time Zone Converter

Pick any date and time, select a source and target timezone, and see the converted result side by side — with UTC offsets included. The tool uses your browser's built-in Intl API to correctly account for daylight saving time on the selected date. Supports all 600+ IANA timezones with a searchable dropdown.

All processing happens in your browser. No data is sent to any server.

Frequently Asked Questions

How many time zones can I convert between?
The tool lists every time zone from the IANA tz database (600+), accessible via your browser's built-in Intl API. You can filter the list by typing in the search box.
Does the tool account for daylight saving time?
Yes. The Intl.DateTimeFormat API automatically applies the correct DST offset for the selected date, so summer and winter conversions will always be accurate.
Why do some zone names look different from 'UTC+5'?
The IANA database uses location-based names like 'Asia/Kolkata' instead of fixed offsets. These are more reliable because they encode DST rules, not just the current offset.

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