Free Online Stopwatch with Lap Times

ScreenTimer’s online stopwatch is precise to the centisecond and works instantly in your browser — no download required. Start, stop, and reset with a single click or press the spacebar. Record unlimited laps with automatic split time and cumulative total tracking.

Lap Recording and Export

Every lap you record shows the split time for that interval alongside the running total. Your fastest lap is highlighted in green and your slowest in red, giving you instant visual feedback during training or competitions. When you are done, copy all lap data to your clipboard or export it as a CSV file for spreadsheets, training journals, or performance analysis.

Browser Tab Display

Enable “Show time in browser tab” in Preferences and the elapsed stopwatch time appears right in your tab title. This means you can work in another tab and still see the stopwatch ticking in your peripheral vision — no context switching required.

Keyboard Shortcuts

Press Space to start or pause, R to reset, L to record a lap, and F to toggle fullscreen. The stopwatch responds instantly to keyboard input, making it ideal for timing events where your hands are busy.

Use Cases

Athletes use it for interval training and race splits. Students use it for timed practice exams. Coaches record multiple athletes’ times with lap functionality. Home cooks time recipes. Professionals track how long tasks actually take for better time estimation. Whatever you need timed, this stopwatch handles it — free, accurate, and always available in your browser.