How to use this interval timer
Create a sequence of timed efforts and recoveries, choose how many rounds to repeat, and press start. JustInterval runs directly in your browser with no installation or login.
JustInterval.app
A simple, free workout interval timer
Pre & Post Workout
Why use a warm-up?
A short warm-up prepares your body for the harder work ahead.
A short warm-up prepares your body for the harder work ahead.
Main Set
Build your interval set
Add timed steps such as “Hard Effort” or “Rest.” Cadence is optional.
Add timed steps such as “Hard Effort” or “Rest.” Cadence is optional.
Sequence: 0:00
Rounds: Add each step once, then repeat the full sequence with the rounds setting.
Round 1
Ready
-- RPM
00:00