View the current time in multiple timezones simultaneously. Pre-loaded with popular cities and add any IANA timezone from a searchable list. Live-updating every second with 12h/24h toggle.
UTC
UTC · GMT
21:00:12
Wed, Mar 18, 2026
New York
EDT · GMT-04:00
17:00:12
Wed, Mar 18, 2026
London
GMT · GMT
21:00:12
Wed, Mar 18, 2026
Berlin
GMT+1 · GMT+01:00
22:00:12
Wed, Mar 18, 2026
Tokyo
GMT+9 · GMT+09:00
06:00:12
Thu, Mar 19, 2026
Sydney
GMT+11 · GMT+11:00
08:00:12
Thu, Mar 19, 2026
Convert between Unix timestamps and human-readable dates.
Add/subtract dates or find the difference between two dates.
Convert times between timezones with a world clock.
Convert between metric and imperial length units.
Format, beautify, minify, and validate JSON with syntax highlighting.
The world clock starts with six popular timezones: UTC, New York (Eastern), London (GMT/BST), Berlin (CET/CEST), Tokyo (JST), and Sydney (AEST/AEDT). You can remove any of them and add others.
Click the "Add Timezone" button to open a searchable list of all IANA timezones. Type a city or region name to filter, then click the timezone you want. It appears as a new card in the grid.
Yes. Click the X button on any timezone card to remove it. At least one timezone must remain on screen.
Yes. The clock updates every second using a setInterval timer. The seconds tick live on every card. When you switch tabs and come back, times are recalculated from the current time so they stay accurate.
Yes, completely free with no limits. All time formatting uses the built-in Intl API — nothing is sent to any server.