An online stopwatch with start, pause, resume, reset and lap timing.
Live Unix timestamp with bidirectional conversion, multi-timezone and multi-format output
Open →Find the difference between two dates, add or subtract time, and count workdays.
Open →Calculate exact age from a date of birth, with a countdown to the next birthday.
Open →No comments yet. Be the first!
Start, pause, resume, reset and record laps. Elapsed time is calculated from a monotonic time source, so it does not drift when timers are delayed.
No drift. Elapsed time is always recalculated from a monotonic time source (performance.now()) rather than incremented on every tick, so browser scheduling delays never accumulate into an error.
Each "Lap" click records the current total elapsed time and automatically computes the delta from the previous lap (the lap time).
No — reset clears the current time and all recorded laps, and this cannot be undone.
00:00.00
