Interval Timer

Set customizable work and rest intervals for workouts, exercise sessions, or study breaks. Stay focused with alternating work and rest periods.

Timer
Ready
00:00
Round 0 / 0

How to Use the Interval Timer

Setting Your Intervals

Enter the duration for your work intervals and rest intervals. For work intervals, set minutes and seconds for how long each work period should last. For rest intervals, set how long each break should be.

Setting the Number of Rounds

Set how many work-rest cycles you want to complete. For example, if you want to do 8 rounds of 1 minute work followed by 30 seconds rest, enter those values and set rounds to 8.

Starting the Timer

Click the "Start" button to begin your interval workout. The timer will start with a work interval, then automatically switch to rest when complete, and continue cycling through all rounds.

Audio Alerts

The timer plays a sound when switching between work and rest intervals, so you can keep your eyes on your activity without checking the screen.

Interval Timer FAQ

How does the interval timer work?
The interval timer alternates between work and rest periods for the number of rounds you specify. It starts with a work interval, plays a sound when switching to rest, and continues until all rounds are complete.
What are good work and rest interval times?
Common intervals include 1 minute work / 30 seconds rest for high-intensity training, 2 minutes work / 1 minute rest for moderate intensity, or 25 minutes work / 5 minutes rest (Pomodoro style) for study sessions.
Can I use the timer for exercise?
Yes, the interval timer is great for HIIT workouts, Tabata training, circuit training, or any interval-based exercise. Just set your work and rest durations.
Can I use the timer for studying?
Yes, many people use interval timers for focused study sessions. Try 25 minutes of work (study) followed by 5 minutes of rest (break) and repeat.
Does the timer work offline?
Yes, once the page loads, the timer runs entirely in JavaScript in your browser. You can use it offline after the initial load.
How accurate is the timer?
The timer uses your device's system clock and updates every second, providing accuracy to the second.
What happens when all rounds are complete?
When all rounds are complete, the timer will show "Complete!" and stop. You can then start a new session or reset to try again.
Is the interval timer free?
Yes, our interval timer is completely free to use with no hidden costs or Premium features.

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