Free Online Time Zone Converter
Plan meetings across the world by converting a time from one time zone to another.
The time is interpreted in the “From” time zone.
Conversions use the IANA time zone database built into your browser, including daylight saving changes. Times that do not exist because of a DST jump are adjusted to the nearest valid time.
About the Time Zone Converter
Scheduling across time zones is easy to get wrong, especially around daylight saving changes. This converter takes a date and time in one time zone and shows the exact same moment in another, using the IANA time zone database that ships with your browser.
How to convert a time
- Pick the date and time you want to convert.
- Choose the time zone the time belongs to in the From field.
- Choose the destination in the To field.
- Click Convert time to see the result, the source time, and the difference between zones.
Daylight saving and the IANA database
Time zone offsets are not fixed. Many regions shift by an hour in spring and autumn, and some have changed their rules over the years. The converter reads the current rules from your browser, so it automatically uses the correct offset for the date you choose rather than a single fixed offset.
Tips for scheduling meetings
- Share the time in both zones, not just your own, so nobody has to convert manually.
- Mention the time zone name or abbreviation, such as “09:00 CET”.
- Check the week before a meeting whether either location is changing to or from daylight saving.
- Use the Now button to quickly set the current local date and time.
Frequently asked questions
Why does the difference between zones change?
Daylight saving shifts in some regions and not others. The difference between two zones can be one hour larger or smaller during part of the year.
Which time zones are supported?
The list includes the IANA time zones available in your browser, covering countries and regions around the world.
What happens during a daylight saving jump?
If the selected wall-clock time does not exist because clocks jumped forward, the converter returns the nearest valid instant instead of a time that never occurred.