Online Stopwatch

Yes. Instead of adding up ticks, this online stopwatch records the moment you press start and, on every frame, recomputes elapsed time as the difference from the system clock. So even if the browser throttles a background tab or the screen sleeps, the time is correct the instant you return — no drift piling up.

The total is the full time since you pressed start. A lap — also called a split — is the time for that segment alone: the gap between one lap press and the previous one. Press L or the Lap button and the stopwatch records both, so you see each interval and the running total side by side. With two or more laps, the fastest is highlighted in green and the slowest in red.

Yes. The running state and every lap are saved in your browser's localStorage under the stopwatch: key, and nothing is sent to a server. Refresh the page or reopen it later and a stopwatch that was running keeps counting from the right moment, with all laps intact. Reset clears them.

Space starts and pauses, L records a lap, and R resets. The shortcuts read physical key positions, so they work the same on any keyboard layout or input method, and they're ignored while you're typing in a field — so they never get in the way.

Press Copy results and the laps are copied as tab-separated text — lap number, split and total per line. Paste into Excel, Google Sheets or Numbers and each value lands in its own cell automatically. If the browser blocks the clipboard, the results appear on screen so you can select and copy them by hand.