1 Hour Timer
Sixty minutes on the clock for exams, events and long sessions.
- 100% free
- No signup
- Private: stays in your browser
- Updated November 2026
About this 1 hour timer
This 1 hour timer counts down a full sixty minutes and shows hours, minutes and seconds in large, clear digits. Use it for exams, extended project time, school events or any long session that needs a visible end.
The timer keeps exact time from the clock, so it's reliable for the whole hour even if your computer is busy with other windows. A sound marks the end, and the ring turns red in the final minutes.
Need something different? The full tool lets you set anything you like: classroom timer.
What fits in an hour
Final exam
A visible hour reduces anxious clock-watching and questions.
Science fair judging
Keep rounds on schedule with a big shared clock.
Hackathon or build day
One hour to design and build, with check-ins along the way.
Reading marathon
An hour of reading for a class challenge or read-a-thon.
Frequently asked questions
Does the 1 hour timer show hours?
Yes. It shows 1:00:00 and counts down hours, minutes and seconds.
Can I set 90 minutes instead?
Yes. Type 90 in the custom time box, or 1:30:00, and press Set.
Will my computer going to sleep stop it?
Keep the screen awake for the sound to play. When the computer wakes, the timer shows the correct remaining time.