30/30 HIIT Timer
30 seconds of work, 30 seconds of rest. The most sustainable HIIT format — beginner-friendly but still high-intensity.
What is 30/30 HIIT?
30/30 HIIT is a balanced interval format: 30 seconds of high-intensity work, 30 seconds of active rest, repeated for as many rounds as you want to do. The 1:1 work-to-rest ratio makes it more sustainable than Tabata's 2:1 work-to-rest, which means most people can hold form through 10–20 rounds rather than collapsing after 8.
How to use this 30/30 timer
- Choose your exercises — one for a single-exercise session, or several for a circuit.
- Warm up properly: 5 minutes of light cardio + dynamic stretches.
- Press Start. 30 seconds of work, 30 seconds of rest, repeat for your target rounds (the timer is set to 10 by default; reset and adjust if you want more).
- Cool down for at least 5 minutes after.
Sample 30/30 workouts
- Bodyweight cardio (10 rounds): alternating jumping jacks, high knees, mountain climbers, burpees, squats.
- Strength endurance (12 rounds): alternating push-ups, kettlebell swings, dumbbell rows, goblet squats.
- Cardio finisher (8 rounds): sprints, jump rope, or any single high-intensity exercise.
30/30 vs Tabata vs 45/15
Tabata's 20/10 ratio is more brutal — short rest forces lower volume per round. 30/30 is the most sustainable of the common HIIT formats and the easiest entry point for beginners. The 45/15 timer shifts the ratio toward strength endurance — longer work intervals favor compound lifts and slower, heavier movements.
Tips for better 30/30 sessions
- 30 seconds is short — be moving with full intensity from the second the timer starts.
- Use the rest interval actively: walk, shake out the limbs, breathe deeply. Don't sit down.
- Keep form clean. The moment your form breaks down, the workout is doing more harm than good.
- 10 rounds (10 minutes) is a solid starting workout; experienced users can push to 20.
Frequently asked questions
Is 30/30 HIIT good for beginners?
Yes — 30/30 is one of the most beginner-friendly HIIT formats because the 1:1 work-to-rest ratio gives enough recovery to maintain form. Start with 8–10 rounds and build from there.
How long is a 30/30 HIIT workout?
Each round is 1 minute, so 10 rounds = 10 minutes, 20 rounds = 20 minutes. Most people get a strong session in 12–20 minutes plus warm-up and cool-down.
Is 30/30 better than Tabata?
It depends on the goal. Tabata is more extreme (2:1 work-to-rest, only 4 minutes total). 30/30 is more sustainable and works better for longer cardio sessions. Use both for different days.
What exercises work best for 30/30?
Compound movements that get the heart rate up quickly: squats, push-ups, burpees, kettlebell swings, mountain climbers, jump rope, sprints. Avoid isolation exercises — biceps curls won't move your heart rate enough in 30 seconds to count as HIIT.