HIIT Timer
Use a simple structure for high-intensity interval sessions with customizable work, rest, rounds, and recovery guidance.
▣ Book Fitness ClassesHow to use this timer
Set up your interval workout in three simple steps.
Choose your intervals
Set the work period, recovery period, and number of rounds.
Press start
Follow the on-screen phase and timer during your session.
Recover properly
Use the recovery note to decide when to reduce intensity or stop.
Create your HIIT session
Adjust the intervals to match your fitness level, workout type, and available time.
Interval settings
Beginners may prefer shorter work periods and longer recovery periods.
Your HIIT timer
Session structure
Your session summary will appear here.
Recovery reminder
Take enough recovery to maintain safe movement quality.
What is HIIT?
High-intensity interval training alternates periods of harder effort with recovery periods. The exact duration and intensity should be adjusted to the person and activity.
Work interval
The work period is the active portion of the session. Choose a pace that allows you to maintain safe, controlled technique.
Recovery interval
Recovery may involve rest or easy movement. It gives you time to prepare for the next interval and maintain quality.
How the timer is organized
The timer includes a warm-up, repeated work-and-recovery rounds, and a cool-down.
Example structure
8 rounds of 30 seconds work + 30 seconds recovery, followed by a 5-minute cool-down.
You can change each setting in the calculator to suit your workout.
Progress gradually
Start with fewer rounds, shorter work periods, or longer recovery. Increase only one variable at a time when the current structure feels manageable.
HIIT training tips
Use the timer as a structure for training, not as a reason to ignore your body's signals.
Prepare your muscles and breathing gradually before hard intervals.
Reduce intensity when fatigue makes your movement uncontrolled.
Longer recovery is appropriate when you are new to intervals or very fatigued.
Short, consistent sessions can be more practical than excessive volume.
Consider heat, sweat, session length, and your individual needs.
Stop for chest discomfort, dizziness, faintness, unusual breathlessness, or sharp pain.
HIIT Timer FAQs
Answers to common questions about interval workouts.
