13 Minute Timer

Press Start to count down 13 minutes.

This free 13 minute timer counts down 13 minutes with a shrinking red disc you can read at a glance. 13 minutes is 780 seconds (seven hundred and eighty seconds). It works well as a study block or as a reminder to check on cookies and muffins in the oven.

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What a 13 minute timer is good for

Thirteen minutes turns up more often in the kitchen than you might expect. Many cookie and muffin recipes give a range of twelve to fifteen minutes, and checking at thirteen catches them before the edges darken.

Checking on baking

Set the timer when the tray goes in and take a look when the alarm sounds. Cookies should be golden at the edges and still soft in the middle.

A study block

Thirteen minutes on one question or one chapter, then a short break, is a manageable rhythm for revision days.

Muffins and cupcakes

Small muffins and cupcakes usually bake in thirteen to eighteen minutes. A first check at thirteen avoids dry results.

A walk around the block

An easy walk of about a kilometre takes roughly thirteen minutes, a good break between sessions.

To pace yourself, glance at the disc rather than the numbers. With the 13 minute timer running, half the colour has gone after 6 minutes 30 seconds, and when only a quarter is left you have 3 minutes 15 seconds to wrap up. Open fullscreen if the timer needs to be read across a room, and add a label so everyone knows what the 13 minutes are for.

How to use the 13 minute timer

  1. It is ready

    The dial is already set to 13 minutes. To change it, drag the disc, tap a preset or open Custom.

  2. Press Start

    Or press the Space bar. The red disc shrinks back towards 12 o’clock as the time runs down.

  3. Watch the disc

    Read the time left at a glance, or open fullscreen for a big dial that fills the screen.

  4. Time’s up

    Your alarm plays until you press Stop. Press Reset or R to run the same time again.

13 minutes in other units

13 minutes equals
Seconds780
Minutes13
Hours0.2167
Fraction of a day0.009

Why use this timer

Why a visual timer helps

A shrinking disc turns time into something you can see. You read how much is left at a glance, without doing sums on a clock, and an invisible deadline feels less stressful when you can watch it approach. That is why visual timers are a staple in classrooms and are widely used by people with ADHD and autistic children and adults. Read our guide to using a visual timer, how it helps with ADHD time blindness, classroom transitions and autism.

Why this timer is accurate

The countdown is anchored to your device clock rather than counted in animation frames. It does not drift if you switch tabs or your screen sleeps: it keeps running in the background and still sounds the alarm on time. When you come back, the disc jumps straight to the correct position.

Frequently asked questions

There are 780 seconds in 13 minutes. That is 0.2167 of an hour, or seven hundred and eighty seconds written out.

Checking cookies or muffins before they over-bake, a short revision block on a single chapter, or a thirteen minute walk to clear your head.

Yes. The 13 minute countdown is anchored to your device clock rather than counted frame by frame, so it stays accurate in a background tab and the alarm still fires when the 13 minutes are up.

No. The 13 minute timer runs in your browser on phone, tablet and desktop. It is free, and there is no account, app or download.

Yes. Press the fullscreen button or the F key. The dial fills the screen, so the remaining part of the 13 minutes is readable from the back of the room.

Yes, once this page has loaded. Nothing is sent over the network while the 13 minutes count down, so a dropped connection will not stop the timer.

Most drop cookies, mini muffins and small cupcakes are close to done at thirteen minutes. Check at this point and add a minute or two if they still look pale.

When the 13 minutes are up the disc is empty, the screen shows Time’s up! and your alarm plays until you press Stop. It stops by itself after five minutes.

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