How to use the Time Zone Converter
Convert a specified local date/time between major world time zones using daylight-saving-aware IANA rules.
Calculation formula
Convert source local datetime using its IANA timezone and apply the target IANA timezone, including configured daylight-saving transitions.
Recommended steps
- Enter values using the units shown beside each field.
- Review whether the example assumptions match your situation.
- Run the calculator and compare the key metrics.
- Use the source data or official rates when precision matters.
Known limitations
Ambiguous and nonexistent local times occur at daylight-saving changes; confirm offsets if scheduling a critical event.
Open the calculator โ