Stopwatch
Measures elapsed time from a start point and records laps for comparing intervals.
Timer
00:00:00.00
Spacebar: Start / Pause
Stopwatch and countdown timers manage time from opposite directions
Work blocks, workouts, presentations, cooking, and breaks all need either elapsed time or remaining time. This timer combines a lap-enabled stopwatch with an alarm countdown, plus start, pause, reset, and spacebar control for quick everyday timing.
Timing concepts
Countdown
Counts down from a chosen duration to zero, useful for limits, breaks, cooking, and practice blocks.
Audio alert
Uses browser Web Audio, so volume, permissions, mute state, and browser policy can affect playback.
How to use
- Choose the stopwatch or countdown tab.
- Set the duration if needed, then start with the button or spacebar.
- Use lap, pause, and reset to manage intervals or fixed time limits.
Frequently asked questions
Can I control it with the keyboard?
Yes. When the tool is focused, the spacebar toggles start and pause.
Will the alarm always play?
Not always. Browser autoplay rules, device volume, mute mode, and permissions can limit sound.
Is it suitable for precision timing?
It is fine for everyday tasks, but use dedicated equipment for official sports, experiments, or legal records.
Browser timers can be affected by inactive tabs, power saving, system load, and device performance.