Stopwatch – Online Stopwatch with Lap Times Free
Online stopwatch with lap times. Precise to milliseconds. Free online stopwatch — no download required.
Frequently Asked Questions
The stopwatch is precise to centiseconds (1/100th of a second) and uses requestAnimationFrame for smooth updates.
Yes. Click the Lap button while the stopwatch is running to record a split time. Fastest and slowest laps are highlighted.
Yes. The current time is shown in the browser tab title so you can monitor it without switching back to the tab.
No. Everything runs in your browser. Lap times are cleared when you reset or close the page.
What is Stopwatch?
An online stopwatch measures elapsed time with millisecond precision. Our Stopwatch supports lap recording, allowing you to track split times for multiple intervals. It runs entirely in your browser with no installation required.
How to Use Stopwatch
- 1Click Start to begin timing.
- 2Click Lap to record a split time without stopping.
- 3Click Stop to pause the timer.
- 4Click Reset to clear all times.
Key Features
- ✓Millisecond precision
- ✓Lap time recording
- ✓Start, stop, lap, and reset controls
- ✓Runs in your browser
Benefits
- →Time athletic events and workouts
- →Measure task durations
- →Record split times for multiple intervals
Why Use Irreva for Stopwatch?
Frequently Asked Questions
How precise is the stopwatch?
The stopwatch is precise to milliseconds (1/1000 of a second) using the browser's performance.now() API.
Can I record multiple lap times?
Yes. Click the Lap button to record a split time without stopping the main timer.
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