Time Zone Converter
Convert a time across multiple world time zones instantly.
About This Time Zone Converter
This tool converts any date and time across multiple world time zones simultaneously — useful for scheduling international meetings, planning travel, or coordinating with remote teams. Enter a date and time in the top fields, then add as many time zones as you need. The converted time for each zone updates instantly as you change the input.
Time zone conversions use your browser's built-in Intl.DateTimeFormat API, which uses the IANA Time Zone Database. This means daylight saving time transitions are handled correctly for all regions. The UTC offset shown for each zone reflects the actual offset on the specific date you've entered, including any DST adjustment. Everything runs locally in your browser — no data is sent anywhere.
How to Use
- Click 🕐 Now to load the current date and time, or enter a specific date and time.
- The zones list shows the converted time for each city — the top row is your local time.
- Select a city from the dropdown and click + Add Zone to add more zones.
- Remove a zone by clicking the ✕ button on its row.
Frequently Asked Questions
Intl API, which handles DST transitions automatically. If you enter a date in summer, regions that observe DST will show their summer offset (e.g. BST +01:00 instead of GMT +00:00). The UTC offset shown on each row reflects the exact offset on the date you've entered.