Online Countdown Timer
Set hours, minutes, and seconds, then click Start. When time runs out, a loud alarm plays. Use quick-select buttons for common durations. The timer works even if the browser tab is in the background.
Precision Stopwatch
Click Start to begin timing. Click Stop to pause, Start again to resume. Reset to zero anytime. Measures to 1/100th of a second. Perfect for workouts, cooking, presentations, and more.
Works Offline
Once the page loads, you don't need an internet connection. The timer and stopwatch run entirely in your browser using JavaScript.