Stopwatch — Free Online Stopwatch with Laps

A free online stopwatch that's accurate to a hundredth of a second. Press start (or the space bar), record laps with the Lap button (or L), and reset with R. It keeps running if you switch tabs — and even if you reload the page — because it measures from the clock rather than counting ticks.

Features

• Lap times — every lap shows its own split and the running total, with your fastest lap highlighted green and slowest amber.
• Keyboard shortcuts — Space to start and stop, L for a lap, R to reset.
• Full screen — the ⛶ button turns it into a big display for sports days, classrooms and events.
• Never loses your time — close the tab by accident and your time and laps are still there when you come back.

What People Time With It

• Running and workouts — intervals, laps of the oval, plank holds and rest periods.
• Classrooms and sports days — races, science experiments and reaction-time games, full screen on the projector.
• Speeches and presentations — see exactly how long your talk runs, section by section with laps.
• Tracking real work time — start it when you begin a task and stop it when you're done to learn how long things really take. It's an eye-opener for planning.
• Cooking — when you want to know how long something has been going rather than count down.

Stopwatch or Timer?

A stopwatch counts up from zero — use it when you want to measure how long something takes. A timer counts down from a set time — use it when you want to limit how long something takes. For focus sessions, a countdown usually works better: try our online timer, the 25 minute Pomodoro timer, or a flip-to-start timer cube that also has a count-up mode.

Did you know? Australians searched for a timer or stopwatch millions of times last year — see what the data says in our Australian Focus Index 2026.