Timer PRO
Free Online Interval Timer
Run HIIT, Tabata, and round-based workouts in your browser.
How to use
Three steps from open tab to first beep — no account required.
Open the timer
Go to Timer, or open Browse presets for Tabata, HIIT, HYROX, AMRAP, EMOM, and more. Values load automatically so you can start faster.
Set rounds, work, and rest
Adjust rounds, prep, work, and rest with the steppers or by typing times directly. Prep gives you a short countdown before round one.
Tap Play
Follow the stage colors and sounds. Use UP NEXT to skip an interval, Stop to reset, and the speaker control to mute.
Workout timer presets
Free online interval timers for popular formats. Pick a preset, start in your browser — no signup.
Prefer custom times? Open the interval timer and set rounds, work, and rest yourself.
More in the iOS app
The web timer is great for a quick session. Timer PRO on iPhone unlocks the full training toolkit when you want to go deeper.
- Custom Pro workouts with multiple stages and saved routines
- Voice coach, sound packs, and Live Activities on the Lock Screen
- Workout history, stats, and timer color themes
- Train with the screen locked — built for real gym sessions