Timer+ 40 seconds work · 20 seconds rest
Free 40/20 HIIT Timer
The 40/20 format gives you enough time to settle into each movement while keeping recovery short. This timer is set for eight work intervals and can be customized before you begin.
Choose movements you can perform with consistent form for the full 40 seconds. Add a name to each work segment so the next exercise is always clear.
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7:40 total
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Add exercise names or start with generic work intervals.
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Take your named workouts with you
Timer+ adds voice announcements for exercise names, workout history, live time adjustments, widgets, and Apple Watch support. It is also more reliable when your phone is locked or the browser is in the background.
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Online HIIT timer FAQ
What is the 40/20 HIIT Timer?
The 40/20 format gives you enough time to settle into each movement while keeping recovery short. This timer is set for eight work intervals and can be customized before you begin. Choose movements you can perform with consistent form for the full 40 seconds. Add a name to each work segment so the next exercise is always clear.
Can I name each exercise in this HIIT timer?
Yes. Every work segment has an optional exercise field. Enter names such as Pushups, Sit-ups, or Jump Squats and the active exercise will appear during the workout.
Will the timer keep running when my phone is locked?
Browser behavior varies when a screen is locked or the page is put in the background. Timer+ is the better choice for reliable workouts with voice announcements, history, live adjustments, and Apple Watch support.