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About This HIIT Interval Timer
This free online HIIT timer is designed for high-intensity interval training, Tabata, circuit training, and boxing workouts. It runs directly in your browser with no app download or login required.
How to Use
- Configure: Click the settings icon to set your Warmup, Work, Rest, and Cooldown durations.
- Share: Use the share button to generate a unique link for your specific workout configuration. Send it to friends or clients!
- Train: Hit Start. The timer uses color-coded backgrounds (Green for Work, Red for Rest) and voice cues to keep you focused without looking at the screen.
Features
- Smart Links: Save your workout settings in the URL.
- Voice Coach: Text-to-speech announces "Work", "Rest", and "Halfway there".
- Visual Timeline: See your entire workout structure at a glance.
- Battery Friendly: Dark mode design saves energy on OLED screens.
Frequently Asked Questions
Does this timer work offline?
Yes! Once the page is loaded, all timer logic runs locally in your browser. You don't need an active internet connection to workout.
Can I use this for Tabata?
Absolutely. The default Tabata protocol is 20s Work, 10s Rest for 8 rounds. Just adjust the settings to match.
Will the screen turn off?
We use the Wake Lock API to prevent your screen from sleeping during an active workout on supported browsers.
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