Time Zone Converter
Don't do time zone math in your head when planning international meetings or calling family abroad: pick the source and target time zones, enter a date and time, and instantly see the converted time and the current offset between the two zones. Daylight saving (DST) transitions are computed automatically for the selected date.
Frequently asked questions
Why does the time difference change during the year?
Many countries move their clocks forward an hour in summer (daylight saving time). When two regions switch on different dates, the offset between them changes seasonally; this tool computes it for the date you select.
Are UTC and GMT the same thing?
In everyday use, yes; both refer to the time at the prime meridian. Technically, UTC is the modern atomic-clock standard, while GMT is the historical observation-based name.
What data does the calculation rely on?
Your browser's built-in IANA time zone database, which is regularly updated with each country's time zone and daylight saving rules.