No uploads · runs in browser
Timer & Stopwatch
Countdown timer and lap stopwatch with alarms and PWA background display.
05:00
Favorite it to find it fast on home
When to use it
A one-minute plank timer
Lap timing for a 5 km run
A three-minute cooking countdown
How to use it
1Step 1Fill in the values
2Step 2Change a value and the result updates instantly
3Step 3Save or copy the result with Start
If the result looks off
The result looks wrong
Check the units and the baseline first. Changing a value updates the result instantly.
I want the starting values back
Press reset to return to the initial state.
Frequently asked questions
Does it ring with the screen off?
With PWA installed it supports notifications, subject to browser background policy.
Does it keep running if I switch tabs?
It does, though some mobile browsers slow background timers. For anything critical, use your phone's built-in clock app.