An online stopwatch with laps, a countdown timer with an alarm and a Pomodoro timer on one page. Use it to time a run, keep track of an exam, cook, do interval workouts or focus in work blocks.
Time is calculated from the system clock rather than by counting seconds, so it stays accurate even if you switch tabs or the browser throttles background tabs to save battery.
How to use
- 1Choose a mode: stopwatch, timer or Pomodoro.
- 2For the timer, enter hours, minutes and seconds or use a preset (5, 10, 15 min…).
- 3Press “Start”. The time also appears in the browser tab title.
- 4An alarm sounds when time is up. Use “Full screen” to see it from across the room.
What you can do
- Stopwatch with laps
- Countdown timer with sound alarm
- Pomodoro with configurable cycles
- Remaining time in the tab title
Stopwatch with laps
Measures to the hundredth of a second. Each time you press “Lap”, the split time and running total are recorded — perfect for training, races or timing each part of a presentation.
Countdown timer with alarm
Set a countdown of up to 99 hours. When it reaches zero an alarm sounds and the screen shows “Time's up!”, which is also announced to screen readers. You can pause and resume without losing the remaining time.
- Timed exams and exercises.
- Recipes and cooking times.
- Rest periods between sets at the gym.
- Keeping meetings and talks on schedule.
What is the Pomodoro technique
The Pomodoro technique alternates focus blocks (usually 25 minutes) with 5-minute short breaks, and every four blocks takes a 15–30 minute long break. Working in short blocks reduces distractions and fatigue.
The timer moves from one phase to the next automatically, plays a sound at each change and counts completed pomodoros. You can adjust every phase length and how many blocks come before the long break.
Frequently asked questions
Does it keep running if I switch tabs?
Yes. Time is based on the system clock, not on counting ticks, and the alarm fires as soon as the browser wakes the tab. The tab title shows the remaining time.
How long is a pomodoro?
The classic setup is 25 minutes of work and 5 minutes of rest, with a 15–30 minute long break every four pomodoros. You can change all of these values here.
Why doesn't the alarm sound?
Make sure “Alarm sound” is checked and your device is not muted. Some browsers block audio until you interact with the page; pressing “Start” is enough.
Can I use it full screen?
Yes. The “Full screen” button enlarges the clock so you can project it in class or read it from a distance.