Online stopwatch
Start, pause and reset — timing to hundredths of a second.
Online stopwatch
A simple, accurate online stopwatch with start, pause and reset. It times to hundredths of a second and runs entirely in your browser — no install, no sign-up. Great for workouts, cooking, study sessions, presentations and games.
How it works
The timer uses your device’s high-resolution clock, so it stays accurate even if the tab is busy. Press start to run, pause to hold the time, and reset to clear it back to zero.
Frequently asked questions
Does it keep running if I switch tabs? Yes — elapsed time is based on the real clock, so it stays correct when you come back.
Do I need to install anything? No, it works instantly in any modern browser.