StopwatchPro is a free online timing suite for athletes, students, teachers, professionals and home cooks. It runs in any modern browser on a phone, tablet or computer, with no download and no account. Pick the tool that fits the job, start it, and keep the tab open while you work.
Stopwatch with laps and splits. Time a run, a speech, a lab step or a speedrun to the millisecond. Record a lap each time you cross a mark and compare the fastest and slowest laps in the list. Lap times stay in your current session and clear when you reset.
Countdown timer. Set hours, minutes and seconds for time blocking, study sessions, presentations or cooking, and save timers you use often. Try the countdown timer.
Interval timer. Build a routine of named steps, such as 40 seconds of work followed by 20 seconds of rest, and repeat it for workouts, HIIT sessions or study sprints.
Alarm clock and digital clock. Set one or more alarms with a sound you can preview first, or keep a large clock on screen. See the alarm clock and the digital clock.
Chess clock. Two-sided timing for chess, Go, board games and debates. Tap your side to pass the turn. See the chess clock.
Metronome and tally counter. Set a steady tempo for music practice, or count people, reps and items with large tap-friendly buttons.
Yes. StopwatchPro is completely free with no sign-up, no download and no hidden fees. It runs directly in your browser.
StopwatchPro measures time to the millisecond using your browser's high-resolution timing functions, which is accurate enough for workouts, cooking, races and lab timing. Exact precision depends on your device.
Yes. Every tool is fully responsive and works on phones, tablets and desktop browsers without needing an app.
After the page has loaded once, the timing tools continue to function offline since all logic runs locally in your browser.
Saved countdowns, routines and alarms are stored locally in your browser only. Lap times exist only in your current session and clear on reset.