Online Stopwatch with Laps — Free
Runs 100% in your browser — your files never leave your device.
Time a workout, a presentation rehearsal, or a debugging session without reaching for your phone. Start, pause, and resume whenever you like; record laps to keep splits and running totals. The timer keeps counting while you work in other tabs — just keep this one open.
How it works
- 1
Start the timer
The display counts minutes, seconds, and hundredths; pause and resume any time.
- 2
Record laps
Each lap stores the split since the previous one plus the running total.
- 3
Reset when done
One click clears the clock and the lap list.
About this tool
How the stopwatch measures
The stopwatch counts elapsed real time from the moment you start, with lap buttons that record splits without stopping the clock. It measures actual elapsed time — pauses and laps are honest, and the display updates live to the hundredth of a second.
Where a browser stopwatch works
Timing tasks and workflows for estimates, measuring how long a process really takes (the input for the ETA calculator), tracking intervals during presentations and workouts, and any timing where the device is already in front of you.
Laps answer a different question
The main clock answers "how long total"; laps answer "how long each part took". Record a lap at every phase of a task, then compare the splits — the slow phase is visible immediately instead of hidden inside a single total.
Frequently asked questions
Does the stopwatch keep running if I switch tabs?
Yes — it counts real elapsed time based on the clock, not animation frames. Background tabs may throttle the display, but the recorded time stays accurate.
What does the lap button do?
It records the current elapsed time as a split while the main clock keeps running — each lap shows both its own duration and its place in the total.
How precise is the timing?
The display shows hundredths of a second, measured from the system clock — far beyond the precision of human reaction on the start button.