Countdown Timer
Millisecond precision countdown with audio alert. Set any duration and let it count down for you.
Set Countdown Duration
Hours
Minutes
Seconds
Set your countdown time
Space Start/Pause R Reset
How it works
Three simple steps —everything happens in your browser.
Set your time
Enter hours, minutes, and seconds for your countdown. Use presets for common durations.
Start countdown
Press start and watch the timer count down with a visual progress ring.
Get alerted
An alarm sounds when time is up. Reset and start again as many times as you need.
Why use ToolKnit Countdown Timer?
100% Browser-Based
No app to install, no account needed. Just open and start timing —works on any device with a browser.
Visual Progress Ring
See your remaining time at a glance with a smooth animated progress ring. Great for presentations.
Quick Presets
Presets: 30 seconds, then 1, 3, 5, 10, 15, 30 and 60 minutes. Enter other durations manually.
Audio Alert
An alert is attempted when the timer reaches zero. Browser audio rules, muting and device sleep can prevent it.
Pro Tips
- ● Enter 25 minutes for a focus interval, then start a separate break or use the Pomodoro tool.
- ● Great for cooking and baking —set multiple timers for different dishes.
- ● The clock deadline is retained when you switch tabs, but background alerts may be delayed.
- ● Use during presentations to keep your talk on schedule with the visual progress ring.