Interval Timer — HIIT Workout Timer

Welcome to the Interval Timer guide — a free online tool for workouts, with no sign-up required.

What is an Interval Timer?

It runs work and rest phases in rounds, with a live countdown and clear phase colors.

How to Use

1. Open the Interval Timer
2. Set work and rest seconds
3. Choose the number of rounds
4. Press Start and follow the phases

Why Use It?

HIIT and Tabata workouts need precise timing. This timer keeps you on schedule without apps.

Useful Tips

• Use 30s work / 10s rest for beginners
• Increase rounds as you improve
• Keep your phone out of reach

FAQ

What is Tabata?

20s work, 10s rest, repeated 8 times.

Is it free?

Yes, 100% free with no registration.

Frequently Asked Questions

Is this tool free?

Yes, 100% free with no registration.

Does it work on mobile?

Yes, it works on all devices.

Frequently Asked Questions

Is this tool free?

Yes, 100% free with no registration.

Does it work on mobile?

Yes, it works on all devices.

Conclusion

The Interval Timer is a practical, free solution that handles the task quickly and accurately in your browser. Whether you are a beginner or an experienced user, it removes the guesswork and saves you time.

You can use the Interval Timer as often as you need — there are no limits, no sign-up, and no data is ever uploaded. Simply open the tool, enter your details, and get your result in seconds.

Start using the Interval Timer now and see how it simplifies your workflow.