Harvard Step Test Calculator
Score the Harvard Step Test: enter how long you stepped and your recovery heart-rate counts to get the physical fitness index (long or short form) and its rating from poor to excellent.
How it works
Long form: index = seconds stepped × 100 ÷ (2 × (count₁ + count₂ + count₃)) · Short form: index = seconds stepped × 100 ÷ (5.5 × count₁) · counts are 30-second pulse counts starting 1, 2 and 3 minutes after stopping
The Harvard Step Test (Brouha, Harvard Fatigue Laboratory, 1943) measures cardiovascular fitness by how quickly your heart rate recovers after up to five minutes of stepping at 30 steps per minute. A fitter heart drops back faster, giving lower recovery counts and a higher index. The long form uses three 30-second counts; the short form uses only the first and has its own rating scale.
Worked example
Stepping the full 300 s with recovery counts of 70, 60 and 55 beats: index = 300 × 100 ÷ (2 × 185) = 30,000 ÷ 370 = 81.1, rated Average on the long-form scale (68–82, Fox et al.) — 83 or more would be Good.
Sources: Topend Sports — Harvard Step Test · Wikipedia — Harvard step test
Frequently asked questions
How do I do the Harvard Step Test?
Step up and down a 50 cm (20 in) bench — 41 cm (16 in) for women in many protocols — 30 times a minute for five minutes or until you can no longer keep pace. Sit down immediately and count your pulse for 30 seconds at 1:00, 2:00 and 3:00 minutes after stopping.
What is a good Harvard Step Test score?
On the long form (Fox et al. norms), above 96 is excellent, 83–96 good, 68–82 average, 54–67 low average and below 54 poor. On the short form, above 80 is good and below 50 poor. Trained endurance athletes often exceed 90.
What if I stop before five minutes?
Enter the time you actually stepped in seconds. Stopping early lowers the index proportionally, which is part of the test.
Are the counts beats per minute?
No — each is the number of beats in a 30-second window. A count of 70 corresponds to 140 beats per minute.
Related calculators
This calculator gives an estimate for general fitness and education only. It is not a diagnosis — results from field tests and prediction equations can differ from laboratory measurements, so talk to a doctor or qualified exercise professional before acting on them.