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Used to estimate calorie expenditure from heart-rate readings. If you've granted Apple Health permissions, the details are filled in automatically.

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Personal details stay on the device and are used only for calorie calculations. Seconds doesn't send them to its servers or to any third party.

Create and run interval timers for HIIT, circuits, tabata, and more.

Timer Templates

HIIT Timer
Circuit Training Timer
Circuit Training Timer
Round Timer
Custom Interval Timer
Compound Timer

Curated Workouts

Workout Archive
Bodyweight
Kettlebell
Jump Rope
Stretching & Mobility
Yoga Flow
C25K
Astronaut

Video Timers

Featured Interval Timers
PACER Test / Beep Test / Multi-stage Fitness Test Timers
Repeated Single Interval Timers
HIIT Timers
Countdown Timers
Countdown Timers with Voice
HIIT Timers with 10 Second Rest Intervals

Disclaimer: The workout timers on this site are provided for illustrative purposes only. Always adapt intervals, intensity, and rest periods to suit your own fitness level and physical condition. Consult a qualified healthcare or fitness professional before starting any new exercise program. Exercise at your own risk.

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