Find the time difference between two time zones with this Time Zone Difference Calculator. Select your From Time Zone and To Time Zone, enter a date and time, and instantly see the local time at the destination, the hour offset, and whether the destination is ahead or behind. Great for scheduling meetings, calls, or travel across cities worldwide.
Time at Destination
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Hour Offset
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Source UTC Offset
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Destination UTC Offset
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Destination is
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The difference is calculated by converting your selected date and time to UTC using the source time zone offset, then applying the destination time zone offset to get the local time there. The hour offset is simply the difference between the two UTC offsets, accounting for daylight saving time where applicable.
UTC (Coordinated Universal Time) is the global time standard against which all time zones are measured. Time zones are expressed as UTC+ or UTC− offsets (e.g., UTC+5:30 for India). Converting both times to UTC first ensures accurate comparisons regardless of local rules.
The offsets listed in this calculator reflect standard (non-DST) offsets for simplicity. In practice, regions like the US, EU, and Australia shift their clocks by 1 hour during DST periods. For DST-aware conversions, use a library like the Intl API or a live tool such as timeanddate.com.
Most time zones are whole-hour offsets from UTC, but some countries chose fractional offsets for geographical or political reasons. India uses UTC+5:30, Nepal uses UTC+5:45, and Australia's central zone uses UTC+9:30, among others.
Use this calculator to enter a proposed meeting time in your local time zone and see what that corresponds to in the other zone. Aim for an overlap during normal business hours (9 AM – 6 PM) in both locations. The world clock table also helps you visualise multiple time zones at once.
Because time zones span up to 26 hours apart (from UTC-12 to UTC+14), converting a time near midnight can push the destination into the previous or next calendar day. For example, if it is 10 PM Monday in New York, it is already 3 AM Tuesday in London.
The furthest ahead is UTC+14, observed in the Line Islands of Kiribati (e.g., Kiritimati). The furthest behind is UTC-12, observed by Baker Island and Howland Island (uninhabited US territories). This means the world spans up to 26 hours of time difference at any moment.
Yes. Enter your departure date and time in your local time zone as the 'From' zone, then select your destination city's time zone as the 'To' zone. The result shows what the local time will be at your destination, helping you plan arrivals, connections, and jet lag.