Precise stopwatch with lap times and a customizable countdown timer.
Our free online stopwatch is precise to the millisecond, perfect for timing workouts, cooking, presentations, and more. The lap function lets you record split times without stopping the clock. For precise time calculations between events, try our Time Duration Calculator.
The countdown timer lets you set any duration in hours, minutes, and seconds. Use it for exam practice, cooking timers, workout intervals, or any activity that needs precise timing. Combine it with our Pomodoro Timer for structured productivity sessions.
The stopwatch is precise to the millisecond, using your browser's high-resolution timer.
Yes, click the Lap button to record split times while the stopwatch continues running.
Yes, a visual and audio alert triggers when the countdown reaches zero.
Millisecond-accurate stopwatch with lap time recording.
Set custom countdown timers for any duration.
Record and review split times and lap intervals.
Free online stopwatch and countdown timer with millisecond precision. Record lap times, set custom countdowns, and time anything with our easy-to-use tool. Works on any device β no installation needed.
Our stopwatch is accurate to milliseconds using your browser's high-resolution timer API.
Yes! Click the Lap button during timing to record split times. All laps are displayed with individual and cumulative times.
Yes, you'll hear an audio alert when the countdown reaches zero. Works even when the browser tab is in the background.
Last updated: February 12, 2026