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Countdown Timer

Set a countdown timer with an alarm — perfect for cooking, workouts and study.

Set a number of minutes and this countdown timer ticks down to zero, then sounds an alarm. Ideal as a kitchen timer, a workout interval timer, or a focus timer for studying. Need to count up instead? Use the stopwatch.

Guides about Countdown Timer

Productivity & focus The 52/17 Rule and Other Focus-Break Timer Ratios Compare work/break ratios beyond Pomodoro, including the 52/17 rule, 90-minute focus sessions, and 50/10, and learn how to set each on a timer. 3 min read Stopwatch & timer tips How to Use an Interval Timer for Workouts A practical guide to using an online interval timer for workouts, covering work and rest periods, HIIT and Tabata setups, and how to train hands-free with clear beeps. 6 min read Productivity & focus The Pomodoro Technique With a Free Online Timer A practical guide to the Pomodoro technique using a free online timer, covering the 25-minute method, work and break cycles, setup steps, and tips to stay focused. 6 min read

More aceclock pages

Online Clock A big, accurate digital clock showing the current time and date — free, full-screen ready, no download. Analog Clock A clean analog clock with hour, minute and second hands. Stopwatch Start, stop and lap a precise stopwatch right in your browser.

Frequently asked questions

Does it make a sound?
Yes — it plays an alarm beep when the countdown reaches zero (make sure your device isn't muted).
Can I use it as a kitchen timer?
Absolutely — set the minutes, start it, and it will beep when your time is up.