Timezone Converter
Convert a time between any two time zones.
Enter a wall-clock time (interpreted in the source zone) or a full ISO string with Z/offset (an absolute instant). Daylight Saving Time is handled automatically by your browser's Intl engine.
1 Jun 2024, 08:00:00 2024-06-01T12:00:00.000Z How to use
- 1 Type a date and time, e.g. 2024-06-01T14:30.
- 2 Choose the source timezone the time is written in.
- 3 Choose the target timezone you want it in.
- 4 Read the converted time and the UTC equivalent, and copy either.
About Timezone Converter
The Timezone Converter takes a date and time in one zone and tells you what it is in another.
Enter a wall-clock time, choose the source and target zones from a list of common cities, and it shows the converted local time alongside the underlying UTC instant in ISO 8601.
You can also paste a full ISO string with a Z or an offset, in which case it is treated as an absolute moment regardless of the source zone.
The hard part of timezone maths is Daylight Saving Time.
Offsets are not fixed: New York is five hours behind UTC in winter but only four in summer, and the changeover dates differ from country to country.
Getting this wrong is how meetings get missed by an hour.
This tool leans on your browser's built-in Intl engine, which carries the full IANA timezone database, so it knows for any given instant whether a zone is on standard or summer time and applies the correct offset automatically — no lookup tables to go stale.
Use it to schedule a call across continents, work out when a livestream starts in your zone, or sanity-check a timestamp from a server in another country.
The conversion runs entirely in your browser, so the times you are juggling are never uploaded or logged, and it keeps working offline.
FAQ
Does it account for Daylight Saving Time?
Yes, automatically. It uses the browser's Intl timezone database, which knows the DST rules for every IANA zone and the exact dates they change.
What if I paste a time with a Z or +offset?
Then it is treated as an absolute instant. The source zone is ignored for parsing, and the tool simply re-formats that moment for your target zone.
Are my times sent anywhere?
No. The conversion is a pure client-side calculation; nothing is uploaded or stored, and it works offline.