Time Zone Converter
Convert a date and time between world time zones, and see the current time in each.
Convert a time between zones
Current times
Zone offsets come from your browser’s time zone database and reflect the daylight-saving rules in force on the date you select.
What Time Zone Converter does
Scheduling across time zones is error-prone because offsets are not fixed: they change with daylight saving, on different dates in different countries, and not at all in some.
Zone data comes from your browser's own internationalisation database, so the offsets and abbreviations shown are the ones in force for the date you select, including historical and future daylight-saving rules.
- Current time in a set of major world zones
- Convert a specific date and time between zones
- Correct daylight-saving handling for the selected date
How to use Time Zone Converter
- 1
Read the current times
The clocks update every second.
- 2
Pick a date and time to convert
Choose the moment in the source zone. Selecting a date matters, because the offset on a day in July may differ from the same clock time in January.
- 3
Read the converted time
The equivalent local time is shown for the target zone.
Limits and known behaviour
- A selection of major zones is offered rather than the full time zone database.
- Accuracy depends on your browser's time zone data being current. Governments change daylight-saving rules at short notice, and an out-of-date browser can be wrong for a future date.
- During a daylight-saving transition, one local hour does not exist and another occurs twice. Times that fall in those windows are ambiguous by nature.
- Your device's clock and zone setting determine what is displayed as local time.
Privacy and data handling
Runs entirely in your browser
- The conversion is arithmetic performed in this page. Nothing you enter is transmitted or stored.
- The tool works offline once the page has loaded.
Site-wide data handling, including analytics and advertising, is described in the privacy policy.
Frequently asked questions
Why does the offset change depending on the date?
Because of daylight saving. Most of Europe and North America shift by an hour for part of the year, on different dates, and many countries do not shift at all. A conversion is only meaningful for a specific date.
Is UTC the same as GMT?
For practical purposes yes, and the terms are used interchangeably. Strictly, UTC is an atomic time standard and GMT is a time zone that happens to align with it.