Time Zone Converter
Your time, around the world. Compare live clocks and plan across time zones.
Calculated in your browser · no location permissionDetecting your time zone…
Add or remove clocks
Add a time zone
Display & daylight-saving options
How to use Time Zone Converter
Compare the same instant across world time zones. Your browser’s current zone is detected automatically, and regional zones follow their daylight-saving rules for the selected date.
- Start with the live clocks, or select a source time zone and enter a date and time.
- Compare UTC, New York, Chicago, London, Moscow, Shanghai, and Seoul. Search the full supported time-zone list to add a custom clock.
- Choose 12- or 24-hour display, inspect date changes and UTC offsets, and copy the comparison. For a repeated daylight-saving time, explicitly choose the earlier or later occurrence.
A practical example
A meeting at 09:00 in New York can be compared with London and Seoul on its actual date, including any next-day change.
Useful things to know
What are the limitations?
EST and CST can refer to different places or fixed offsets. We use New York for Eastern time and Chicago for US Central time, with daylight saving where applicable; China uses Shanghai. Russia has many zones; Moscow is the default. Time-zone rules come from your browser’s time-zone data. This is a planning aid, not a guarantee about future government rule changes.
Is this private and free to use?
Times are calculated in your browser, using its time-zone data. No account, location permission, or server request containing a conversion is required.
What should I check before relying on the result?
Check the date, UTC offset, city, and any daylight-saving warning. Ambiguous abbreviations are shown with specific regional zones.
Is Time Zone Converter free, and how is my privacy handled?
Yes. Time Zone Converter is free to use without registration. Tool inputs are processed in your browser rather than uploaded to our servers. Optional usage analytics follows your cookie preferences; it does not receive your files or tool inputs. Keep your browser updated and review results before sharing.