Time Zone Difference Calculator

Calculate the number of hours difference between two time zones given their UTC offsets, and find the equivalent local time.

Inputs

e.g. 14.5 = 2:30 PM

Results
Hours Difference
6
Equivalent Time in Target Zone
20

Try an example

Formula

Target Time = (Local Time + (Target Offset − Origin Offset)) mod 24

Learn How This Works

Time Zone Differences and ISO Week Numbers Explained

How UTC offset math calculates time zone differences, and how the ISO 8601 week-numbering system actually works.

Frequently Asked Questions

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