Convert a clock time from one UTC offset to another, such as UTC+05:30 (IST) to UTC−06:00 (CST), and see the target time and any day shift.

Pick the offset in effect on that date; daylight time changes it (e.g. CST −06:00 becomes CDT −05:00).

Optional settings

UTC offset conversion

Target time = source time − source offset + target offset. An offset is local time minus UTC. Positive offsets are east of UTC; a negative source offset is subtracted by adding its magnitude.

Example

On 2026-10-08, 23:30 at UTC−04:00 is 03:30 UTC on October 9. At UTC+05:30, that same instant is 2026-10-09 09:00:00. The clock adjustment is +9.5 hours.

Frequently asked questions

How do I enter UTC+05:45?

Choose UTC+05:45 from the list, or pick Custom offset and enter 5.75 hours or 345 minutes. The supported offsets run from −14 to +14 hours in whole minutes.

Does this automatically handle daylight saving time?

No. Enter the offset that applies at the source and destination on the event date. A named location can change its offset during the year.

Can the result shift by more than one day?

Yes. Large differences between offsets can move the target date by two calendar days. Clock-only mode shows that shift; dated mode applies it to the supplied date. Leap seconds are excluded.

References