45 Minute Timer
A 45-minute countdown — about one class period — on a big color ring.
Quick presets
More classroom timers
- 1 Minute Timer
- 2 Minute Timer
- 3 Minute Timer
- 5 Minute Timer
- 10 Minute Timer
- 15 Minute Timer
- 20 Minute Timer
- 25 Minute Timer
- 30 Minute Timer
- 45 Minute Timer
- 60 Minute Timer (1 Hour)
About the 45 Minute Timer
Forty-five minutes is close to a typical class period in many schools, which makes it handy for tests, labs and work periods that last the whole class. The ring and the tab title keep the time visible while you teach.
Ways to use a 45 minute timer
Full-period tests
Project the timer so every student can see the time left without asking.
Lab periods
Keep labs on schedule and leave time for cleanup when the ring turns red.
Work periods
A visible block for long projects, with check-ins at the color changes.
Study hall
A steady, quiet countdown for homework time.
Frequently Asked Questions
Will the timer stay accurate for 45 minutes?
Yes. It measures time from the device clock, so it doesn’t drift even if the computer is busy or the tab is in the background.
Can I add extra time for students who need it?
Press Add 1 min as many times as you need while the timer runs. For individual accommodations, many teachers keep a second timer open on a student device.