What is an interval timer?

An interval timer alternates between work and rest periods for a set number of rounds, signalling each change with a sound so you never have to watch the screen.

Which presets are included?

Classic Tabata 20/10 × 8 plus HIIT 30/30, 40/20, 45/15 and 60/30. Every preset can be adjusted afterwards.

Does it show the total workout time?

Yes. The total time — preparation, all work rounds and the rests between them — is shown under the countdown and updates as you change the settings.

Do I need an account?

No. The interval timer is free and works without signing in. An account only adds saved presets and session history across devices.

Interval Timer — Free Online Work/Rest Timer

Total workout 3:55

Prep (s)Work (s)Rest (s)Rounds

Looking for a specific format? Tabata timer · HIIT timer

Frequently asked questions

What is an interval timer?: An interval timer alternates between work and rest periods for a set number of rounds, signalling each change with a sound so you never have to watch the screen.
Which presets are included?: Classic Tabata 20/10 × 8 plus HIIT 30/30, 40/20, 45/15 and 60/30. Every preset can be adjusted afterwards.
Does it show the total workout time?: Yes. The total time — preparation, all work rounds and the rests between them — is shown under the countdown and updates as you change the settings.
Do I need an account?: No. The interval timer is free and works without signing in. An account only adds saved presets and session history across devices.

Work, rest, repeat

A free interval timer for HIIT, circuits and Tabata. Set work, rest and rounds, see the total workout time, and follow clear audio cues and colour changes at every phase.