WebToolsHUBHow to use the stopwatch and countdown timer
- Pick Stopwatch or Countdown from the tabs at the top of the workbench.
- Stopwatch: press Start (or Space), press Lap (or L) at each milestone, and read both the lap split and the running total.
- Countdown: set minutes and seconds, or tap a preset from 1 to 25 minutes, then press Start.
- When the countdown reaches zero the display flashes and a triple beep plays — press Reset for the next round.
- Use the keyboard throughout: Space starts or pauses, L records a lap, R resets everything.
Frequently Asked Questions
How accurate is the stopwatch?
Timing is computed from the system clock rather than by counting timer ticks, so it stays drift-free even though the display refreshes about 30 times a second. The display shows centiseconds; background tabs refresh less often but the underlying time stays correct.
Will the countdown alert fire if I switch tabs?
The completion time is computed from the wall clock, so the result is correct whenever you return — the display and alert catch up immediately on focus. Browsers throttle background timers, so the beep itself may be delayed until the tab is visible again.
Is any timing data stored or uploaded?
No. The timer runs entirely in your browser, laps live only in the current page session, and nothing is stored after you close the tab.
Why does the alert sometimes stay silent?
Browsers require a user interaction before a page may play audio. The first click on Start satisfies that requirement — if you opened the page and started it only with the keyboard, press any key or click once and the next alert will sound.
Can I time intervals, like workout sets?
Yes — that is what laps are for. Start the stopwatch once, tap Lap at the end of each set, and the list shows both each interval and the cumulative time; Reset clears everything for the next session.