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A complete set of free online time instruments. Read your local time with UTC offset, set an alarm with snooze, time intervals to a hundredth of a second, compare the time across world cities and time zones, and browse a perpetual calendar with ISO week numbers and lunar phases — all in your browser, no installation required.
Measuring the moment. Second by second, without interruption.
Set a wake time. The sound triggers at the exact moment.
No alarms set.
Measuring elapsed time to the hundredth of a second.
No laps recorded.
Current time in major cities across all continents. Search by city or country.
A perpetual month calendar with ISO week numbers and lunar phase — the long measure beside the short.
An online timer is a simple time-measuring tool that works directly in your browser. CHRONOS offers the fastest and most intuitive online timer, running on every device — desktop, phone, or tablet. No sign-up, no ads, and completely free.
CHRONOS is designed for productivity. Users rely on it for work, study, exercise, cooking, meditation, and sport. Multiple modes are available: stopwatch, countdown, interval timer, and the pomodoro technique. Everything runs in the browser — no app download required.