45 Second Timer

45 seconds countdown

00 : 00 : 45

 

About this 45 second timer

A free 45-second countdown timer that starts with one click.

Press start and the timer shows exactly when your 45 seconds will be up. It rings at zero, goes full screen for classrooms and kitchens, and is ready to go again with one tap.

What people use a 45 second timer for

  • HIIT work intervals (45 on / 15 off)
  • Fast Pictionary rounds
  • Timed stretch holds
  • One-question oral quizzes in class

45 seconds at a glance

In seconds45 seconds
In minutes0.75 minutes
Halfway point22 seconds
Start now and it ends at—

How to use the 45 second timer

  1. The timer is ready at 00:45. Tap Edit time to change it.
  2. Press Start Timer (or the space bar). The finish time appears under the digits.
  3. Press Full screen to fill the screen — handy for classrooms, meetings and kitchens.
  4. When it reaches zero an alarm plays until you press Stop Alarm.

Keyboard shortcuts

  • Space start / pause
  • R reset
  • F full screen
  • M mute

Frequently asked questions

How do I set a 45 second timer?

Press Start Timer — it is already set to 00:45. To change the length, tap Edit time, enter hours, minutes and seconds, then press Set. You can also add a minute at any point with +1 min.

Does the timer work on a phone?

Yes. It runs in any modern mobile browser with no app or sign-up, and it asks your phone to keep the screen awake while it runs.

Related timers

HIIT Timer Pictionary Timer 20 Second Timer 30 Second Timer 1 Minute Timer 2 Minute Timer

Other timer lengths

20 Second Timer 30 Second Timer 45 Second Timer 1 Minute Timer 2 Minute Timer 3 Minute Timer 4 Minute Timer 5 Minute Timer 6 Minute Timer 7 Minute Timer 8 Minute Timer 9 Minute Timer 10 Minute Timer 11 Minute Timer 12 Minute Timer 13 Minute Timer 14 Minute Timer 15 Minute Timer 16 Minute Timer 17 Minute Timer 18 Minute Timer 20 Minute Timer 22 Minute Timer 24 Minute Timer 25 Minute Timer 26 Minute Timer 30 Minute Timer 35 Minute Timer 40 Minute Timer 45 Minute Timer 50 Minute Timer 55 Minute Timer 60 Minute Timer 70 Minute Timer 75 Minute Timer 80 Minute Timer 90 Minute Timer 2 Hour Timer 3 Hour Timer 4 Hour Timer 5 Hour Timer 6 Hour Timer 7 Hour Timer 8 Hour Timer 9 Hour Timer 10 Hour Timer 12 Hour Timer 16 Hour Timer 18 Hour Timer 20 Hour Timer 24 Hour Timer 36 Hour Timer 48 Hour Timer 72 Hour Timer