NovaTimeZone's stopwatch records time to the millisecond and lets you capture unlimited lap splits. All data stays in your browser — nothing is uploaded or stored.
How accurate is the stopwatch? ▾
The stopwatch uses the browser's high-resolution Performance API for millisecond accuracy, which is far more precise than a standard system clock.
Does it keep running in the background? ▾
Yes — the stopwatch uses absolute timestamps so it stays accurate even if the tab is hidden or the browser throttles JavaScript timers.
Can I export my lap times? ▾
Click the "Copy" button to copy all lap times to your clipboard in a clean text format you can paste into any spreadsheet or notes app.