Online Timer
The timer above is set to five minutes. Change the number or pick a length from the list, press start, and it counts down to zero and sounds a tone. Nothing to install.
5:00
Nothing plays until you press start.
The count runs against your device clock, so a tab left in the background still lands on time. The sound is the weak part: a phone that has put itself to sleep may never play it. Do not lean on this, or on any browser timer, where a missed alarm costs you something - medication, an exam, a step in cooking that burns.
Every page in this section
- 10 Minute TimerA 10-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 5 Minute TimerA 5-minute countdown that starts on a click, with an optional tone at zero and what people
- 20 Minute TimerA 20-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 1 Minute TimerA 1-minute countdown that starts on a click, with an optional tone at zero and what people
- 30 Minute TimerA 30-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 30 Second TimerA 30-second countdown, and why this length shows up where it does
- 1 Hour TimerA 1-hour countdown that starts on a click, with an optional tone at zero and what people a
- 45 Minute TimerA 45-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 2 Hour TimerA 2-hour countdown that starts on a click, with an optional tone at zero and what people a
- 15 Second TimerA 15-second countdown, and why this length shows up where it does
- 90 Second TimerA 90-second countdown, and why this length shows up where it does
- 15 Minute TimerA 15-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 3 Minute TimerA 3-minute countdown that starts on a click, with an optional tone at zero and what people
- 2 Minute TimerA 2-minute countdown that starts on a click, with an optional tone at zero and what people
- 4 Minute TimerA 4-minute countdown that starts on a click, with an optional tone at zero and what people
- 12 Minute TimerA 12-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 25 Minute TimerA 25-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 6 Minute TimerA 6-minute countdown that starts on a click, with an optional tone at zero and what people
- 7 Minute TimerA 7-minute countdown that starts on a click, with an optional tone at zero and what people
- 8 Minute TimerAn 8-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 9 Minute TimerA 9-minute countdown that starts on a click, with an optional tone at zero and what people
- 40 Minute TimerA 40-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 50 Minute TimerA 50-minute countdown that starts on a click, with an optional tone at zero and what peopl
- 10 Second TimerA 10-second countdown, and why this length shows up where it does
- 20 Second TimerA 20-second countdown, and why this length shows up where it does
The timer above
Five minutes is 300 seconds, and that is what loads by default because it is the length people ask for most often. Every other length below opens its own page with the number already set, so there is no typing at all: the page loads, you press start.
Every length here
- Seconds: 10, 15, 20, 30 and 90 seconds.
- Short minutes: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 minutes.
- Longer: 12, 15, 20, 25, 30, 40, 45 and 50 minutes.
- Hours: 1 hour and 2 hours.
What the common lengths are for
Most people arrive with a length already in mind, and the same handful come up again and again.
| Length | Seconds | What it is usually |
|---|---|---|
| 30 seconds | 30 | Handwashing, and one quadrant of a toothbrush |
| 3 minutes | 180 | A boxing round, and the classic soft-boiled egg |
| 10 minutes | 600 | A short break, and a pot of tea left to steep |
| 25 minutes | 1,500 | A pomodoro work block |
| 45 minutes | 2,700 | Roughly one school period |
| 90 minutes | 5,400 | A full sleep cycle, and a football match |
The lengths that divide an hour
If you are stacking repeats, some numbers land neatly on the hour and some never do. One, 2, 3, 4, 5, 6, 10, 12, 15, 20 and 30 minutes all divide 60 exactly – twenty minutes run three times is an hour, twelve five times, four fifteen times. Twenty-five does not: two pomodoros are 50 minutes, and three overrun the hour by a quarter of it. Forty-five goes into three hours, not one.