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Simple HIIT Timer
Start a simple HIIT workout instantly. No setup required.
READY
ROUND 1 / 10
00:30
Runs entirely in your browser. No installation needed.
Simple HIIT Timer: Guide
- Intent
- Free HIIT timer online for a simple 10-minute session: 30s work / 30s rest for 10 rounds. Start instantly and follow the transitions.
- What it does
- Runs a fixed HIIT workout with beeps for transitions and the last few seconds, plus pause/resume and a sound toggle.
- Key features
- 30/30 x 10 rounds, Sound toggle, Pause/resume
- Privacy
- Runs locally in your browser. No sign-in, no tracking.
- Best for
- A quick 10-minute HIIT block when you do not want to program intervals
- Warm-ups, finishers, or treadmill/bike 30/30 routines
- Anyone searching 'HIIT timer online' or '30 30 timer'
- Why this tool
- Fixed 10-round structure for zero setup
- Clear beeps for transitions and the finish so you can focus on effort
- Local-first: no sign-in and no tracking
How to use
- 1Press START to begin the first WORK phase.
- 2Follow the WORK/REST label and the on-screen timer.
- 3Use PAUSE/RESUME if needed.
- 4Press RESET to return to READY and restart from round 1.
Common mistakes
- Expecting custom round counts (this tool is fixed by design).
- Sound is toggled off, so transitions are silent.
- Screen sleep or backgrounding the tab on mobile can affect timers.
Examples
10-minute HIIT circuit
10 rounds total
WORK: 30s (push hard)
REST: 30s (recover)
Treadmill intervals (simple)
WORK: fast run
REST: walk
Repeat for 10 rounds