Fitness & Wellness Timers

Interval & Workout Timer

Online HIIT and interval workout countdown timer for training sessions.

Get ready
00:10
Round 1 of 10

Press Space to start or pause · ? for shortcuts

Set your intervals

Settings

Settings are saved in this browser only.

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Need several timers at once? Open Multiple Timers →

Keyboard shortcuts

Space
Start / pause
R
Reset
N
Skip to next
E
Edit time
F
Fullscreen
M
Mute / unmute
Esc
Stop alarm / exit fullscreen
?
Show shortcuts

Free Online Interval & Workout Timer

Set your own work time, rest time and number of rounds. The timer switches between them automatically, beeps at each change and counts down the last three seconds of every round.

This is an interval & workout timer set to 30 seconds of work and 15 seconds of rest, for 10 rounds. It gives you 10 seconds to get ready first. Press Start and it runs the whole workout for you.

It beeps three times before every change, then plays a different sound for work and for rest, so you can follow along without looking. The screen shows Work or Rest in big letters, which round you are on, and the time left.

Tap Edit to change the work time, rest time or number of rounds. Your settings go into the link, so you can bookmark your own workout or send it to a training partner.

Work
30 seconds
Rest
15 seconds
Rounds
10
Total time
7:25

Frequently Asked Questions

How long is the whole workout?

With these settings it takes 7:25 from start to finish, including the get-ready countdown. Change the rounds or times with Edit and the total changes with them.

Can I change the work and rest times?

Yes. Tap Edit and set any work time, rest time, number of rounds and get-ready time. The link updates too, so you can save your workout as a bookmark.

Will I hear it if I'm not looking at the screen?

Yes. It beeps for the last three seconds of every round and plays a different sound for work and rest. Turn on Voice countdown in Settings to hear "Work" and "Rest" spoken out loud.

Will my phone screen stay on?

On most phones, yes: the screen stays on while the timer is running. You can switch this off in Settings. Keep the page open for the whole workout.

All timers →

Free Online Interval & Workout Timer

Set your own work time, rest time and number of rounds. The timer switches between them automatically, beeps at each change and counts down the last three seconds of every round.

This is an interval & workout timer set to 30 seconds of work and 15 seconds of rest, for 10 rounds. It gives you 10 seconds to get ready first. Press Start and it runs the whole workout for you.

It beeps three times before every change, then plays a different sound for work and for rest, so you can follow along without looking. The screen shows Work or Rest in big letters, which round you are on, and the time left.

Tap Edit to change the work time, rest time or number of rounds. Your settings go into the link, so you can bookmark your own workout or send it to a training partner.

Work
30 seconds
Rest
15 seconds
Rounds
10
Total time
7:25

Frequently Asked Questions

How long is the whole workout?

With these settings it takes 7:25 from start to finish, including the get-ready countdown. Change the rounds or times with Edit and the total changes with them.

Can I change the work and rest times?

Yes. Tap Edit and set any work time, rest time, number of rounds and get-ready time. The link updates too, so you can save your workout as a bookmark.

Will I hear it if I'm not looking at the screen?

Yes. It beeps for the last three seconds of every round and plays a different sound for work and rest. Turn on Voice countdown in Settings to hear "Work" and "Rest" spoken out loud.

Will my phone screen stay on?

On most phones, yes: the screen stays on while the timer is running. You can switch this off in Settings. Keep the page open for the whole workout.

All timers →