What is this tool?
Measure elapsed time intervals and record lap splits with high-resolution accuracy using the browser performance.now() API.
When to use it?
Time athletic laps, record code execution benchmarks, or track task durations.
How does it work?
Measures high-resolution performance intervals using window.performance.now() to deliver microsecond-accurate time measurement free from clock drift.
Example Conversions
Sample Input:
Start -> Lap -> Lap -> Stop
Sample Output:
Lap 1: 00:04.32, Lap 2: 00:03.88, Total: 00:08.20
Frequently Asked Questions
performance.now() measures monotonic time from page load with sub-millisecond resolution, unaffected by operating system clock adjustments or daylight saving shifts.