45 minute timer
This timer is set to exactly 45 minutes. Press Start, and an alarm will ring when the time is up. Need a different time? Change it below or pick another ready-made timer.
Keyboard: Space = start/pause · R = reset · F = full screen
Great for
A 45 minute timer is handy for one class period, a long workout or an exam section.
How to use it
Pick a time with the quick buttons or type hours, minutes and seconds. Press Start (or the Space key). The alarm rings when the time is up – press Stop to silence it. Use full screen to show the timer on a projector or TV.
Questions & answers
How do I set a 45 minute timer?
It's already set! Just press Start. The countdown runs for 45 minutes and then rings.
Will it ring if my screen locks?
Keep this tab open with the sound on. The timer uses your device's clock, so it stays exact, and it asks the browser to keep the screen awake while running.