45 Minute Timer

Press Start to count down 45 minutes.

This free 45 minute timer counts down 45 minutes with a shrinking red disc you can read at a glance. 45 minutes is 2,700 seconds (two thousand seven hundred seconds). It is the length of a school lesson, a gym session, a therapy hour and a football half, so it is one of the most used timers on the site.

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What a 45 minute timer is good for

Forty-five minutes shows up everywhere. It is the length of each half of a professional football match, the session length many therapists bill as a standard appointment, and a common class period in schools.

A football half

Each half of an association football match lasts forty-five minutes plus stoppage time. Use the timer for training games and five-a-side.

A therapy session

Many counselling and therapy sessions run for forty-five to fifty minutes, the so-called therapy hour.

A gym session

A focused strength session of forty-five minutes is long enough for a warm-up, the main lifts and a cool-down.

A school lesson

Forty-five minutes is a common class period in primary and secondary schools.

To pace yourself, glance at the disc rather than the numbers. With the 45 minute timer running, half the colour has gone after 22 minutes 30 seconds, and when only a quarter is left you have 11 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 45 minutes are for.

How to use the 45 minute timer

  1. It is ready

    The dial is already set to 45 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.

45 minutes in other units

45 minutes equals
Seconds2,700
Minutes45
Hours0.75
Fraction of a day1/32

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 2,700 seconds in 45 minutes. That is 0.75 of an hour, or two thousand seven hundred seconds written out.

Timing a half of football, a forty-five minute therapy or coaching session, a focused gym workout or a single school lesson.

Yes. The 45 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 45 minutes are up.

No. The 45 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 45 minutes is readable from the back of the room.

Yes, once this page has loaded. Nothing is sent over the network while the 45 minutes count down, so a dropped connection will not stop the timer.

It is longer than a classic 25 minute Pomodoro. Some people use forty-five minutes of work with a fifteen minute break as a deep work variant.

Yes, in many schools. Class periods of forty-five minutes are common, especially in primary schools and in countries with shorter lessons.

A whole chicken breast on the bone, baked potatoes in a hot oven, a lasagne once assembled, or a loaf of quick bread. Start the 45 minute timer as the dish goes in.

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