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15:00

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Space
Start or pause
F
Fullscreen
Esc
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R
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↑
Add a minute
↓
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M
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15 minute timer

A quarter of an hour is the unit most plans are written in, which makes it the easiest block to schedule: fifteen minutes of reading, of homework, of a break away from the desk.

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The short answer

Fifteen minutes is a quarter of an hour: the shortest long break in the Pomodoro Technique, a common block for homework or independent study, and time for a walk round the block. Press Start and the frame turns amber at three minutes left, then the alarm sounds at zero.

How to use it

Three steps to a timer on the wall

  1. Step 1: Choose a time

    Pick a preset or set your own. The timer remembers what you used last on this device.

  2. Step 2: Press start

    Start the timer, then press F or the fullscreen button to fill the screen.

  3. Step 3: Run the room

    Space pauses, the up arrow adds a minute, R resets. Fullscreen shows the timer alone, with no ads and no navigation.

Running it well

Four things worth knowing

  • Amber at three minutes

    The frame changes colour when a fifth of the time is left, which on fifteen minutes is three. That is enough warning to finish a paragraph or head back from a walk.

  • Homework in blocks

    A child who cannot face an hour of homework can usually face fifteen minutes. Set it, work until it rings, take a short break, and set it again.

  • The long Pomodoro break

    After four 25-minute work blocks, the Pomodoro Technique takes a longer break of 15 to 30 minutes. Fifteen is the short end, and 25 minutes is one of the presets here.

  • Take it with you on a phone

    Open the page on your phone before a walk and keep the screen on. The page asks the phone not to sleep while the timer runs.

In the room

Built to be read from the back row

A timer that only works on the person running it is not doing the job. The digits scale to the screen, the colour changes before the end, and fullscreen shows nothing else at all.

A teacher presenting to a classroom of students
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Photo by Quilia on Unsplash

No ads on your big screen

Ads pay for this page, and they stay on this page. The moment the timer goes fullscreen there is nothing on screen but the time — no banners, no navigation, no surprises in front of a room.

  • Fullscreen shows the timer alone
  • Ad sounds can never clash with the alarm
  • Saved times stay on your device — no account
  • Works with an ad blocker, and offline once loaded
FAQ

Questions people ask

Anything we've missed?

Tell us

How long is a quarter of an hour?

Fifteen minutes, which is 900 seconds.

How long is the long break in the Pomodoro Technique?

Fifteen to thirty minutes, taken after every four 25-minute work blocks.

Can I change it to 12 or 20 minutes?

Yes. Tap a preset or type any minutes and seconds in the boxes under the timer before you press Start.

Will it show on a classroom board?

Yes. Press F for fullscreen and the countdown fills the board with nothing else on screen.

Time something specific

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