Every time tool you need, in one place
Check the time anywhere on Earth, convert between time zones, plan with calendars, follow the Sun and Moon, and run timers — all free and instant.
Time around the world
All tools
World Clock
Live local time in cities around the world, updating every second.
Time Zones
Convert a time between zones and browse a full UTC-offset reference.
Calendar
Monthly and yearly calendars with week numbers and today highlighted.
Sun, Moon & Space
Sunrise, sunset, twilight, moon phases and this year's seasons.
Timer
A countdown timer and a precise stopwatch, right in your browser.
Calculators
Date duration, add/subtract dates, business days, Unix time and age.
Why 123Clock?
Accurate & live
Times are computed on the server with the full IANA time-zone database (including daylight saving) and tick live in your browser.
No sign-up
Every tool works instantly in your browser. Nothing to install, no account, no tracking of your location.
Genuinely useful
From scheduling meetings across continents to catching the next full moon, these are the tools we reach for every day.