Timezone Converter
Convert any date and time between time zones. DST-aware with UTC offset display.
Year-Month-Day, 24-hour clock.
Popular Zones
Pick a date and time in one zone and instantly see the equivalent in another zone, including DST handling and UTC offsets.
Pick a date and time in the datetime picker. The converter defaults to the current moment and your local system timezone.
Choose the source timezone. Type to search the full IANA timezone list — cities are grouped by region.
Choose the target timezone you want the time converted to.
Read the converted time and date in the target zone, along with the current UTC offset and DST status for both zones.
Use the swap button to reverse the source and target zones if you need the conversion in the other direction.
- Does the converter handle Daylight Saving Time correctly?
- Yes. Conversion uses the browser built-in Intl.DateTimeFormat API, which applies the correct DST rules for the selected date and zone. A DST indicator shows whether the zone is currently observing daylight time.
- Where does the list of timezones come from?
- The full IANA timezone list is enumerated at runtime using Intl.supportedValuesOf("timeZone"). No third-party timezone data is bundled, so the list always matches your browser.
- What is the difference between a UTC offset like UTC-5 and a timezone name like America/New_York?
- A timezone name identifies a geographic region with its own DST rules over history. A UTC offset is the current difference from UTC for a specific moment. America/New_York is UTC-5 in winter and UTC-4 during DST, for example.
- Is the converted time stored anywhere?
- No. All conversion happens in your browser and nothing is sent to a server or saved between visits.
More time tools
Set a timer for any duration. Get an alert when time is up.
TimerPrecise stopwatch with lap tracking and millisecond accuracy.
ClockWork in focused intervals with automatic break scheduling.
ProductivityTrack the current time in multiple cities at a glance.
ClockConvert Unix epoch timestamps to dates and back, in seconds or milliseconds.
DateCalculate exact age in years, months, days, hours, and seconds.
DateAdd or subtract from a date, or measure the duration between two dates.
DateRun work/rest intervals for HIIT, Tabata, and circuit workouts.
TimerSet multiple alarms with labels, audio, and desktop notifications.
TimerFind the best meeting time across timezones on a 24-hour overlap grid.
TimezoneCalculate sunrise, sunset, twilight, and golden hour for any location.
TimezoneTwo-player chess clock with Fischer increment and Bronstein delay.
Productivity