Convert a chosen time across many cities at once with UTC offsets, day/night, and a meeting-overlap planner, or run it live. Daylight saving is handled automatically. Free, real-time.
Set a base city and a specific date and time, or leave it running live, and see the equivalent moment in every city you add, each with its UTC offset, the hour difference from your base, and a day or night indicator. A meeting planner strip lays 24 hours side by side across all zones and colour-codes working hours, so you can eyeball the overlap where everyone is awake. All daylight-saving rules come from the IANA database via your browser, so the results stay correct across DST changes.
Calibrating Time Zone Converter......
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Pick a source and target zone and see the converted time immediately, with daylight-saving handled for you, the part manual math gets wrong twice a year. It's made for scheduling a call across continents, catching a live stream, or working out when a deadline actually lands in your own day.
Pick the city you're planning from. It defaults to your device's local zone and is marked 'Base' in the grid.
Enter the date and time you want to convert, or hit 'Now' to track the current moment live. Times you enter are read as your base city's local wall clock.
Use the 'Add city' picker to drop in every location you care about. Each card shows the converted time, offset, and whether it's day or night there.
Scan the meeting planner strip for columns where the most cities are green (9-5). That's the window where a call suits everyone.
Because DST shifts are applied automatically, a 3 PM London slot resolves to the correct local time in New York, Dubai, or Sydney even during the weeks the offsets change. Convert once and share a time everyone reads correctly, instead of a UTC offset people have to decode.
The pairs people convert most follow simple offsets when there's no DST in play: EST is 3 hours ahead of PST, GMT/UTC is 5 hours ahead of EST, and IST (India) is 5.5 hours ahead of GMT, so it's 10.5 hours ahead of EST. Because several of these zones observe daylight saving on different dates, the gap between them isn't fixed year-round, which is exactly why manual math slips twice a year. Add both cities here and the converter reads the live IANA rules and shows the correct current difference, whichever side has switched.
Select your source time zone, enter the time, then select your target time zone. The tool instantly shows the equivalent time, including automatic daylight saving time adjustments.
UTC (Coordinated Universal Time) is the primary time standard used globally. It doesn't change for daylight saving. All time zones are expressed as UTC+ or UTC- offsets. New York is UTC-5 (EST) or UTC-4 (EDT).
Use the meeting planner: enter times during business hours in your time zone and see what time it is for team members in other zones. Aim for overlap in standard business hours (9am-5pm) for all participants.
Daylight Saving Time (DST) shifts the clock forward 1 hour in spring and back in fall. Not all countries observe DST, and they change on different dates. This tool automatically accounts for current DST status in each time zone.
The contiguous US has 4 time zones: Eastern (ET, UTC-5/4), Central (CT, UTC-6/5), Mountain (MT, UTC-7/6), and Pacific (PT, UTC-8/7). Hawaii is UTC-10, Alaska is UTC-9. Numbers in parentheses show Standard/Daylight Saving Time offsets.
A UTC offset is a fixed number like +5:30 (India) or -8:00 (Pacific). A time zone is a named region (e.g., 'America/New_York') that may have multiple UTC offsets throughout the year due to daylight saving. Time zones are always preferred over raw offsets for scheduling because they handle DST automatically.
Enter a time and add each participant's city; the converter shows the equivalent local time everywhere at once, and it accounts for daylight saving so the times stay accurate.
Add every location and the tool highlights the hours that fall within working hours for everyone, so you can pick a slot that is reasonable for all participants.
Pick the source and target zones (for example EST to PST is -3 hours, EST to UTC is +5 hours in winter) and enter the time; the converter handles the offset and daylight saving automatically.
Yes: DST transitions are applied automatically for each zone, so conversions stay accurate year-round.
Coordinated Universal Time is the global reference from which all time zones are offset, used as a neutral baseline for scheduling.
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