Time Zone Converter
Convert a local clock time from one time zone to another.
About Time Zone Converter
The difference in UTC offsets is added to the local time, and the result is wrapped into a valid 24 hour clock. Correctly converting across zones prevents missed calls and deadlines for teams spread around the world.
Formula
Time Zone
Target minutes = local minutes + (target offset - your offset) x 60, wrapped to 24 hours
- UTC offset
- Hours ahead of or behind Coordinated Universal Time
Worked example
With the default values below, Time Zone Converter returns Target Time of 15:15. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Your houraccepts 0–23
- 9
- Your minuteaccepts 0–59
- 15
- Your UTC offsetaccepts -12–14
- -5
- Target UTC offsetaccepts -12–14
- 1
Results
- Target Time
- 15:15
- Target Hour
- 15
- Day Indicator
- Same day
Step by step
- 1Values used
- 2Time Zone
- 3Target Time= 15:15
- 4Target Hour= 15
- 5Day Indicator= Same day
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to whole numbers, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Time Zone calculated?
Target minutes = local minutes + (target offset - your offset) x 60, wrapped to 24 hours The difference in UTC offsets is added to the local time, and the result is wrapped into a valid 24 hour clock.
Why does Time Zone matter?
Correctly converting across zones prevents missed calls and deadlines for teams spread around the world.
What values do I need to enter?
This calculator takes 4 inputs: Your hour, Your minute, Your UTC offset, Target UTC offset. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.