TimerX offers a precision online stopwatch that measures time down to the millisecond, complete with a lap timer to record split times. Whether you are timing a race, tracking your workout intervals, measuring a presentation, or timing a cooking process, our stopwatch is fast, accurate, and works on all devices without any installation or account required.
TimerX stopwatch is accurate to the millisecond (1/1000th of a second). It uses the browser's high-resolution time API for maximum precision, making it suitable for sports timing and scientific measurements.
Start the stopwatch and click the LAP button each time you want to record a split time. Each lap is recorded and displayed below the stopwatch with the individual lap time and cumulative time.
Yes — the stopwatch continues running accurately in the background even if you navigate to another browser tab. Return to TimerX at any time to see the current elapsed time.
A stopwatch counts up from zero, measuring how long something takes. A countdown timer starts at a set time and counts down to zero, telling you how much time is left. TimerX offers both tools in one place.