⏲️ Online Timer
Quick answer
An online countdown timer counts backwards from a duration you choose and signals when that time has elapsed. This timer accepts hours, minutes and seconds, includes one-tap presets from 1 to 60 minutes, and shows progress while it runs. It works entirely in your browser, so the tab must stay open for the finish alarm.
Set a time and press Start.
Quick presets
✅ 100% free · 🔒 Runs in your browser — files never leave your device · 🚫 No sign-up
How to use the Online Timer
- Enter hours, minutes and seconds, or tap a preset such as 5, 10 or 30 minutes.
- Press Start to begin the countdown.
- Use Pause if you need to hold the remaining time, then press Resume.
- When the display reaches 00:00:00, listen for the alarm and read the Time is up message.
Frequently asked questions
What happens when the online timer finishes?
The timer displays “Time is up!”, fills the progress state and plays five short alarm beeps in browsers that allow audio.
Can I set a timer longer than one hour?
Yes. Enter any value from 0 to 99 in the hours field, plus minutes and seconds. The display always uses an hours, minutes and seconds format.
Will the timer keep working if I close the tab?
No. This is a browser timer, so keep this tab open until the countdown finishes. Minimising the browser is fine, but closing the tab stops the timer.