Install LazyTimer

Add to your home screen for quick access

Add LazyTimer to Home Screen

Tap the Share button in Safari
Scroll and tap "Add to Home Screen"
Tap "Add" to confirm

20 Minute Timer

Free Online Countdown Timer with Alarm Sound

20 minute timer - free online twenty minute countdown timer with alarm

20:00

2
0
:
0
0
Space Start/Pause R Reset F Fullscreen

Free 20 Minute Timer Online

Need a 20 minute timer? You're in the right place. Our free 20 minute countdown timer starts instantly with one click. Perfect for power naps, focused work sessions, quick workouts, or any activity that needs precise 20-minute timing.

What Can You Do in 20 Minutes?

Twenty minutes is an ideal duration for many productive activities:

The Science of the 20-Minute Power Nap

Research shows that a 20-minute nap is the sweet spot for refreshment. This duration keeps you in the lighter stages of sleep (stages 1 and 2), making it easier to wake up feeling alert rather than groggy. Sleeping longer risks entering deep sleep, which can cause sleep inertia - that disoriented feeling when you wake up. Check out our dedicated sleep timer for more nap presets and sleep cycle options.

20 Minutes in Seconds

20 minutes equals exactly 1,200 seconds. Our timer displays your countdown in minutes and seconds (20:00 → 19:59 → ... → 0:00), with both digital and analog displays showing your progress visually.

Perfect for Quick Workouts

A 20-minute workout can be incredibly effective. Many HIIT (High-Intensity Interval Training) protocols use 20 minutes as the standard duration. You can burn significant calories and improve cardiovascular fitness in just 20 minutes of focused exercise. Try our specialized workout timer for interval presets.

20 Minute Timer FAQ

How do I set a 20 minute timer?
Simply click the "Start 20 Min" button on this page. The timer is already set to 20 minutes and will begin counting down immediately.
Is 20 minutes the best length for a power nap?
Yes! Sleep researchers recommend 20 minutes as the ideal power nap duration. This length allows you to enter light sleep for refreshment without entering deep sleep, which can cause grogginess.
How many seconds is 20 minutes?
20 minutes equals 1,200 seconds. Our timer displays the countdown in minutes:seconds format, showing your progress from 20:00 down to 0:00.
Can I use this for workout intervals?
Absolutely! A 20-minute timer is perfect for HIIT workouts, circuit training, or any timed exercise session. Use fullscreen mode to see the timer clearly during your workout.
Does this timer have an alarm sound?
Yes! Choose from three alarm sounds: Digital Beep, Vintage Alarm, or Facility Alarm. Click "Test" to preview each sound before starting your timer.

Share This Timer