Countdown Timer
Free countdown timer online with alarm sounds, ambient sounds, fullscreen mode, and stopwatch. Preset durations from 1 to 120 minutes or set a custom time. No signup required.
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About this tool
A free online countdown timer and stopwatch. Choose from preset durations or enter a custom time. The timer features a visual progress ring, alarm sounds, ambient background sounds, fullscreen mode, and keyboard shortcuts.
When the countdown reaches zero, an alarm sounds and a browser notification appears. The timer continues counting up so you can see how much overtime has passed. Switch to Stopwatch mode to count up from zero.
All processing happens in your browser. No data is sent to any server. Your alarm preference is saved locally for your next visit.
20 Minutes Timer
Start a free 20 minutes countdown timer instantly. Click play to begin the 20-minute countdown. An alarm will sound when time is up. You can pause, reset, add extra time, or switch to fullscreen mode.
Things you can do in 20 minutes:
- Power nap
- Complete a workout circuit
- Read a book chapter
- Cook a simple meal
- Prepare a presentation outline
- Clean a room
How long is 20 minutes?
20 minutes is equal to 1200 seconds. This 20 minutes timer will count down from 20:00 to zero and alert you when time is up.
How many seconds are in 20 minutes?
There are 1,200 seconds in 20 minutes. The timer displays both minutes and seconds as it counts down.
What can I do in 20 minutes?
In 20 minutes you can: Power nap, Complete a workout circuit, Read a book chapter, Cook a simple meal, and more. Use this timer to stay focused and track your time.
Frequently Asked Questions
How do I use the countdown timer?
Click any preset duration (1, 2, 3, 5, 10, 15, 20, 25, 30, 45, or 60 minutes) or enter a custom time in MM:SS format. Press the play button or Space to start. The timer counts down with a visual progress ring and sounds an alarm when done.
What alarm sounds are available?
Four alarm sounds: Digital (triple beep), Bell (single tone with decay), Chime (three-note ascending chord), and Soft (gentle low-frequency fade). Click the Alarm button to change and preview sounds.
Can I use it as a stopwatch?
Yes. Click the Stopwatch tab to switch to count-up mode. Press play to start counting up from zero. The progress ring rotates once per minute.
Does it work in fullscreen?
Yes. Press F or click the fullscreen button for a distraction-free, immersive timer display that fills your entire screen.
What happens when the timer reaches zero?
An alarm sounds, a browser notification appears, and the display pulses red. The timer then counts up to show overtime, so you can see how long since it finished.
Can I add time while the timer is running?
Yes. Press the + button or the + key to add 1 minute to a running countdown. You can also press - to subtract time when paused.
What keyboard shortcuts are available?
Space to start/pause, R to reset, F for fullscreen, + to add 1 minute, - to subtract 1 minute (when paused).
Are ambient sounds available?
Yes. Four ambient sounds (Rain, Wind, White Noise, Brown Noise) with adjustable volume. They play alongside the timer to help you focus or relax.