5 Minute Timer
Five minutes is the classic for short breaks, tea and quick tasks. The countdown starts right away – pause, restart or go full screen with a click or the space bar.
Source: MDN: Web Audio API (alarm sound without an audio file). Updated: .
How it is calculated
How the 5 minute timer works
When the page opens, the 5 minutes countdown starts automatically. The timer stores the end time and recalculates the display from the clock on every frame, so it doesn’t fall behind in a background tab.
Browsers only allow sound after a user interaction. Tap the page or press a key once; the alarm is then scheduled on the browser’s audio clock and plays on time, without loading an audio file.
5 minutes in numbers
| Measure | Value |
|---|---|
| Seconds | 300 |
| Milliseconds | 300,000 |
| Share of an hour | 0.083 |
| Rounds per hour | 12 |
| Rounds in an 8-hour day | 96 |
Basis: 1 minute = 60 seconds, 1 hour = 60 minutes (BIPM SI Brochure, Table 8).
When will the alarm go off?
- Start at 9:00 a.m. → alarm at 9:05 a.m.
- Start at 2:55 p.m. → alarm at 3:00 p.m.
- Start at 11:45 p.m. → alarm at 11:50 p.m.
While it runs, the exact end time is shown below the display. A pause moves the end by the length of the pause.
What is a 5 minute timer good for?
- Breaks: stand up, open a window, get water – the timer tells you when to get back to it.
- Kitchen: steeping tea or boiling eggs the way you like them; the steeping time is usually on the pack.
- Meetings: a stand-up round or a buffer between calls.
- Study: five minutes of flashcards – short enough to start right now.
Other lengths
1 minute timer · 2 minute timer · 10 minute timer · 15 minute timer · 20 minute timer · 30 minute timer · 1 hour timer – or any time you like in the online timer with custom input.
Limits
Many phones pause web pages while the screen is locked; the time is correct again after unlocking, but the alarm may not sound. Closing the tab ends the timer. For important wake-up times, use your phone’s alarm clock.
Frequently asked questions
Does the 5 minute timer start automatically?
Yes. The 5 minutes countdown starts as soon as the page opens. “Pause” or the space bar stops it, “Reset” sets it back to the start.
How do I set a 5 minute timer?
You don’t have to: on this page it is already set and starts when the page opens. “Pause” stops it, “Reset” puts it back to 05:00.
How many 5 minute blocks fit into an hour?
Twelve, because 60 ÷ 5 = 12. In an 8-hour day that is 96 blocks.
Why is there no alarm sound?
Browsers only play sound after a user interaction. Tapping the page or pressing a key once is enough. Also check the volume, the mute switch and the “Play sound when time is up” box.
Can I change the time?
Yes. Change hours, minutes and seconds in the form or pick a preset (1 to 60 minutes). The general timer handles any length up to 99 hours.
Sources and legal basis
- MDN: Web Audio API (alarm sound without an audio file)
- MDN: Autoplay guide for media and Web Audio (sound only after user interaction)
- BIPM: SI Brochure, Table 8 (1 min = 60 s, 1 h = 3,600 s)
As of:
Related tools
- Online TimerFree online countdown timer: enter any time or tap a 5, 10 or 15 minute preset, get an alarm when time is up, remaining time in the tab. No sign-up.
- 2 Minute TimerFree 2 minute timer that starts as soon as the page opens, counts down to the second and rings at zero. Full screen and pause, no video ads.
- 10 Minute TimerFree 10 minute timer that starts as soon as the page opens, counts down to the second and rings at zero. Full screen and pause, no video ads.
- Online StopwatchFree online stopwatch with lap times, fastest/slowest lap and copy-to-clipboard. Keeps running after switching tabs or reloading the page.
- 1 Hour TimerFree 1 hour timer that starts as soon as the page opens, counts down to the second and rings at zero. Full screen and pause, no video ads.
- 1 Minute TimerFree 1 minute timer that starts as soon as the page opens, counts down to the second and rings at zero. Full screen and pause, no video ads.