Random Timer
Set a time range and the timer picks a random duration inside it. Turn on surprise mode to hide the remaining time, so nobody knows when the alarm will ring.
01:00 ~ 05:00
How to use
- Enter the minimum and maximum time.
- Choose how many rounds to run and whether to hide the remaining time.
- Press Start. An alarm sounds when the random time runs out, and the next round starts automatically.
Popular uses
- Party games like hot potato, musical chairs and charades
- Classroom activities and surprise quizzes
- Random intervals in HIIT, sprints and reaction training
- Random check-ins to stay focused while studying
Frequently asked questions
How does the random timer choose the time?
Every round it picks a random whole number of seconds between your minimum and maximum, with every value equally likely.
Can I hide the time so players are surprised?
Yes. Enable surprise mode and the display shows only that the timer is running until the alarm goes off.
Does it keep working if I switch tabs?
Yes. The timer is based on the system clock, so it stays accurate in a background tab. Keep the sound on to hear the alarm.
Is it free?
Yes, completely free with no sign-up. Everything runs in your browser.
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