Date & time
Time Zone Converter
Convert a date and time between IANA time zones. Nothing you enter leaves your browser.
Your result will appear here.
What this tool does
About the Time Zone Converter
Convert a date and time between IANA time zones. It helps make date, duration, and timezone work explicit so that assumptions can be checked before the result is reused.
It helps make date, duration, and timezone work explicit so that assumptions can be checked before the result is reused.
How to use it
- Enter ISO date, source zone, and destination zone in the input pane. Use the example button if you want to see the expected syntax.
- Review the input for the structure shown in the example. Then select “Convert time zone.”
- Inspect the result for warnings or structural differences, then copy it into the destination system.
Practical example
Start with a known input
Try this sample input: 2026-07-12T14:30:00 America/New_York Europe/London Select “Convert time zone” and compare the result with the source before using it elsewhere.
What to know about the result
- Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.
Common questions
Using the Time Zone Converter
Is the Time Zone Converter free to use?
Yes. FormatCalc's Time Zone Converter is free to use with no account required.
Is my data private when I use the Time Zone Converter?
Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.
How do I use the Time Zone Converter?
Paste or type your input, select any available options, and choose Convert time zone. You can then copy the result.
What should I check before using the result?
Processing happens in this browser. Your entered text and selected files are not sent to FormatCalc for conversion.