Run a 45-minute lesson
Use a shared countdown for a lesson scheduled to last forty-five minutes. Leave room for instructions, activities, and a recap.
45 Minute Timer
Set a forty-five-minute block for a lesson, revision, or project work. Press Start and keep the remaining time in view.
45:00
Set a whole number from 1 to 999 minutes. Press Start to begin.
Keep this page open and your device awake. Browser settings may limit sound in background tabs.
What can you do in 45 minutes?
Revise a subject
Choose topics before starting. Work through practice questions and use the final minutes to check mistakes.
Work on a project section
Focus on one deliverable: part of a slide deck, a design revision, or a report section. Save the next task for later.
Schedule a practice session
Set aside time for music, language, or another skill. Plan a few exercises within the block before you begin.
How to use this 45 minute timer
- 1
Start the countdown
The timer is already set to 45 minutes. Press Start when you’re ready.
- 2
Pause or reset if needed
Press Pause to hold the countdown, Resume to continue, or Reset to return to the selected duration.
- 3
Choose how time ends
Choose a ringtone, test it, and adjust the volume in the header sound settings. At zero, press Stop alarm to silence the reminder.
45 minutes in other units
45 minutes = 2,700 seconds = ¾ of an hour.
45 Minute Timer FAQ
How do I start a 45 minute timer?
This page opens with 45 minutes on the clock. Press Start to begin. Reset returns the timer to the selected duration.
Does the timer make a sound?
The shared sound settings in the header control the alarm for every tool. Choose a ringtone, test it, and set the volume there. Select Silent for a visual-only reminder. Browser sound settings still apply.
Will the alarm work if I switch tabs or lock my phone?
Background tabs, screen locking, and device sleep can delay or prevent the alarm. Keep this page open and your device awake, and test the sound before starting.
Can I display this timer during a lesson?
Yes. Use full screen where your browser supports it. Choose Silent in the header settings for a countdown without an audible alarm.