30 Second Timer
Thirty seconds for a plank, a stretch or one round of a workout interval. Free, no sign-up.
FAQ
What can I do in 30 seconds?
Hold a plank, stretch one side, or do one interval of jumping jacks. Many circuit workouts use 30 seconds on, 30 seconds off.
How long should I hold a plank?
Thirty seconds is a good start. Add 10–15 seconds each week as it gets easier, keeping your back straight.
Is it free? Do I need an account?
Free, no sign-up — it runs in your browser. Sign in only to keep your streak and stats.