Precise online stopwatch with lap times and split tracking.
This free online stopwatch measures time precisely to hundredths of a second. Use it for sports timing, cooking, workouts, presentations, games or any task where you need to measure elapsed time. Click Lap to record split times without stopping the clock.
Click Start and the digits begin counting up from zero — minutes, seconds, hundredths. Click Lap mid-run to record a split without stopping; each lap captures both the cumulative time and the gap to the previous lap. Pause freezes the clock; clicking Start again resumes from where it left off. Reset clears everything. The lap list keeps all your recorded splits so you can copy or screenshot them. Works on phone, tablet and desktop — keyboard shortcut: spacebar starts and stops.
A stopwatch counts up from zero — perfect when the duration is unknown and you want to measure how long something takes (a sprint, an exam, a task). A countdown counts down to zero from a set duration — perfect when you want a fixed time limit (cooking, focus blocks, exam time). Athletes use stopwatch + lap to compare current splits to previous best; cooks use a countdown so they don't have to keep watching the time. Both run alongside each other if you open them in two tabs.
requestAnimationFrame and Date.now() for accuracy to ~10ms. Browser tab throttling when the tab is in the background may affect precision for very long measurements.Track running splits without a sports watch, time speeches and presentations to stay under a slot, measure how long household chores actually take, time chess moves in a casual match, or run your own pop-quiz timer in a classroom. Everything stays on this page; no app, no signup.