FREE CALCULATOR
Time Zone Converter
Convert a clock time between common fixed UTC offsets for quick planning.
Converted time13:00
Time difference+1 hours
This uses fixed UTC offsets and does not automatically account for daylight-saving changes. Check the local time zone for meetings where DST matters.
CALCULATOR GUIDE
About the Time Zone Converter
Convert a date and time between selected named time zones for meetings and travel.
How to use this calculator
- Enter the values requested by the calculator and check their units.
- Choose assumptions that match the scenario you want to estimate.
- Review the result and change one input at a time to compare scenarios.
- Verify important decisions against the relevant agreement, institution or official guidance.
How the calculation works
Time-zone rules account for regional offsets and daylight-saving changes that can vary by date.
Example
A meeting time in New York can map to a different hour or even date in London or Tokyo.
Things to keep in mind
- Include the date and select the correct city or named zone.
- Check ambiguous local times around daylight-saving transitions.
- The result is an estimate based on the inputs and assumptions provided.
- Check applicable terms and official guidance before making financial, employment or academic decisions.
Frequently asked questions
Why does the time difference change?
Some regions change clocks and others do not, and their change dates can differ.
Are results guaranteed or official?
No. The tool provides an estimate or arithmetic result and may not include every real-world rule, fee or policy.
Can I compare scenarios?
Yes. Change one input at a time to see how it affects the result.