Free time and date tool
Time Zone Converter
Choose a source and destination city or time zone. The same instant is displayed in both places.
✓ Your time and date calculations are not stored.
Your result will appear here.
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How it works
Convert a date and time between cities and IANA time zones with daylight-saving rules.
- Choose a source city or IANA time zone.
- Choose the destination city or IANA time zone.
- Set the local date and clock time, then calculate the matching instant.
Example
If a meeting starts at 9:00 AM in New York, select America/New_York and Europe/London to get the correct London time for that date.
How accuracy is handled
Named IANA zones are date-aware; fixed abbreviations such as EST or PST are not used as calculation rules.
Privacy: Inputs are validated and calculations use calendar-aware IANA time-zone rules.
Frequently asked questions
Can I search by city?
Yes. The searchable lists include every active city and time zone.
Are DST changes included?
Yes. The selected calendar date determines the applicable IANA rules.