Beep Test Calculator

The Beep Test — also called the bleep test, 20-metre multi-stage fitness test (MSFT), or pacer test — measures aerobic fitness by having you run back and forth between two lines 20 metres apart, keeping pace with audio beeps that get faster every minute. The level and shuttle you reach before falling behind estimates your VO2 max and fitness rating. This calculator converts your result.

How the Test Progresses

You run 20 m, touch the line, and turn before the next beep. Each level lasts about a minute and contains several shuttles; the required speed rises by 0.5 km/h per level, starting at 8.0 km/h. The test ends when you can no longer reach the line in time on two consecutive beeps.

Estimating VO2 Max

This calculator uses the Léger 20m MSFT regression, which estimates VO2 max from the running speed reached and the runner's age:

where speed is the running speed (km/h) at the final level reached. The regression is validated for adults; younger athletes are clamped to age 18 for the formula.

Fitness Ratings (VO2 max, Age 18–25)

Worked Example

A 25-year-old who reaches level 9, shuttle 5 is running near 12 km/h. Plugging into the regression gives an estimated VO2 max in the mid-to-high 40s — an Excellent rating for that age band.

Tips for a Better Score

Pace conservatively in the early levels, turn efficiently at the line, and train with interval running to raise your top sustainable speed. Many military, police, and team-sport programs use the beep test as a standard entry benchmark.

Note: The beep test estimates VO2 max from the final level and shuttle reached using the standard 20 m protocol and a published regression. Results vary with motivation, running surface, footwear, and pacing accuracy, and differ from lab gas-exchange testing. Warm up well and consult a clinician before maximal-effort tests.