A time zone offset calculator converts a time from one UTC offset to another, so you can schedule across zones. Formula: UTC minutes = local h x 60 + local m – offset from x 60. Dest = UTC + offset to x 60. Wrap into 0..1439 minutes, then format HH:MM. 14:00 at UTC−5 is 20:00 at UTC+1.
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How to use the time zone offset calculator
- Enter the local hour (0 to 23) and minute.
- Enter your UTC offset in hours, such as −5 or 5.5.
- Enter the target UTC offset.
- Read the converted time and check the date.
How the time zone offset calculator works
The time zone offset calculator converts a clock time from one UTC offset to another. It turns the local time into minutes, subtracts your offset to get Coordinated Universal Time (UTC), adds the target offset, and wraps the answer into a 24-hour day. Offsets are entered as numbers of hours, so UTC−5 is −5 and India’s UTC+5:30 is 5.5.
Time zone offset calculator worked example
A meeting at 14:00 in New York in winter (UTC−5) is 19:00 UTC. Paris in winter is UTC+1, so the time zone offset calculator shows 20:00. A 09:30 call in Los Angeles in winter (UTC−8) is 17:30 UTC and 23:00 in India (UTC+5.5).
| Local time | From | To | Result |
|---|---|---|---|
| 14:00 | UTC−5 | UTC+1 | 20:00 |
| 09:30 | UTC−8 | UTC+5.5 | 23:00 |
| 22:00 | UTC+0 | UTC+9 | 07:00 next day |
| 06:00 | UTC+10 | UTC−4 | 16:00 previous day |
| 12:00 | UTC−7 | UTC−4 | 15:00 |
Watch the date
The result wraps around midnight, but the tool shows only the time, not the date. When converting east across many hours, the answer may fall on the next day; when converting west, it may fall on the previous day. Check by asking whether the UTC time plus or minus the offset passed midnight, as in the table above.
Daylight saving time
Offsets change when daylight saving time starts or ends. Most of the United States moves from UTC−5 to UTC−4 in the Eastern zone, and from UTC−8 to UTC−7 in the Pacific zone, between the second Sunday in March and the first Sunday in November. Europe changes on different dates, and many countries do not use daylight saving time at all. Enter the offset that applies on the date of your meeting, not the standard offset.
Common UTC offsets
- US Pacific: −8 standard, −7 daylight
- US Eastern: −5 standard, −4 daylight
- UK: 0 in winter, +1 in summer
- Central Europe: +1 in winter, +2 in summer
- India: +5.5 all year
- Japan: +9 all year
Inputs and limits
Enter the hour from 0 to 23 and minutes from 0 to 59. Real offsets run from −12 to +14 hours, including some 30- and 45-minute offsets such as Nepal at +5.75. The tool rejects offsets outside this range or not in quarter-hour steps, so a typo such as 50 instead of 5 gets an error instead of a wrong time. It also does not know named zones or their daylight saving rules.
Scheduling across several zones
For a call with people in three or more zones, convert the proposed time into UTC first and then into each participant’s offset. A slot of 15:00 UTC is 10:00 in New York in winter, 16:00 in Paris and 20:30 in India. Look for a window that falls in normal working hours for everyone, and rotate inconvenient slots when that is impossible.
When daylight saving time changes in one region but not another, the gap between them shifts by an hour for a few weeks in spring and autumn. Recurring meetings set in one zone will move for people in the other. Re-run the time zone offset calculator on the week of each change to confirm the new local times, and send calendar invitations that carry a named time zone so software can adjust automatically.
Half-hour and quarter-hour offsets are common enough to matter in a time zone offset calculator. Newfoundland uses UTC−3:30, Iran UTC+3:30, Afghanistan UTC+4:30, Nepal UTC+5:45 and parts of Australia UTC+9:30. Enter these as −3.5, 3.5, 4.5, 5.75 and 9.5. The calculator works in minutes internally, so these fractional offsets give exact results rather than rounded hours.
Tips
- Write meeting times with the offset, such as 14:00 UTC−5.
- Confirm offsets close to daylight saving changes.
- Use 24-hour time to avoid AM and PM mix-ups.
Related converters and calculators
Related calculators:
- Time calculator: durations
- Hours calculator: clock hours
- Date difference calculator: days
- Time unit converter: units
Sources
NIST: Daylight saving time; NIST: Time and Frequency Division.
Formula and method
UTC minutes = local_h x 60 + local_m - offset_from x 60. Dest = UTC + offset_to x 60. Wrap into 0..1439 minutes, then format HH:MM.
Shifts local time to UTC using the from offset, then to the target offset, wrapping within a 24-hour day.
Questions about this calculator
How do I enter UTC+5:30?
As 5.5.
Does it handle daylight saving time?
No; enter the offset in effect on the date.
Does it show the date?
No, only the time; check whether it crossed midnight.
What is UTC?
Coordinated Universal Time, the reference for all offsets.
What range of offsets exists?
From −12 to +14 hours.
Check the assumptions and units before relying on a result. Financial, tax and health estimates do not replace advice for your individual circumstances.
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