Time Zone Converter
Pick a date and time in one place and see what it is everywhere else. Add as many cities as you need to find a meeting time that works for everyone.
- Runs in your browser
- No sign-up
- Free to use
| Time zone | Local time | Offset | Difference | Remove |
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How to use Time Zone Converter
- Set the date and time, and choose the time zone it is in. Your own zone is selected by default.
- Review the list of other time zones, which shows the local time and the difference in hours.
- Add another zone from the menu, or remove ones you do not need.
- Select Now to jump back to the current time, or copy the summary to share it.
Time Zone Converter features
Several zones side by side
Compare the same moment in as many cities as you like.
Daylight saving handled
Offsets are calculated for the specific date, so summer and winter time are correct.
Day change indicator
Clearly marks when the time falls on the next or previous day.
Full IANA zone list
Choose from every time zone your browser knows, by region and city.
Shareable summary
Copy a plain-text list of the times to paste into an invitation.
No account or server
Calculations use your browser's built-in time zone data.
When to use Time Zone Converter
- Scheduling a call between colleagues in different countries.
- Working out when a webinar, launch or live stream starts locally.
- Checking the local arrival time of a flight.
- Staying in touch with family abroad at a reasonable hour.
Time Zone Converter FAQ
Does it account for daylight saving time?
Yes. The offset for each zone is looked up for the exact date and time you enter, using the time zone database in your browser, so conversions are correct on either side of a clock change.
What is UTC?
Coordinated Universal Time is the reference from which all time zones are defined as offsets, such as UTC+1 or UTC−5. It does not observe daylight saving time and is, for practical purposes, the same as GMT.
Why are some offsets not whole hours?
Several regions use half-hour or 45-minute offsets, for example India (UTC+5:30), Nepal (UTC+5:45) and parts of Australia.
Why should I choose a city rather than an abbreviation like EST?
Abbreviations are ambiguous and change with the season: EST and EDT are both “Eastern Time”. A city-based zone such as America/New_York always resolves to the correct offset for the date.
What happens to times that do not exist?
When clocks go forward, an hour is skipped. If you enter a time in that gap, it is treated as the equivalent time after the change.
How time zones work
The world is divided into zones that each keep a standard time defined as an offset from UTC. In principle there are 24 one-hour zones; in practice political boundaries, half-hour offsets and daylight saving rules produce several hundred distinct histories of local time. These are recorded in the IANA time zone database, which names each zone after a region and a major city.
Daylight saving time is the main source of mistakes. Countries change their clocks on different dates, and the northern and southern hemispheres do so in opposite seasons, so the difference between two cities can vary by an hour or two through the year. London and Sydney, for example, are nine, ten or eleven hours apart depending on the month. Converting for the actual date of the meeting avoids that trap.