Beep Test Calculator

Estimate VO2 max and final running speed from a 20 m shuttle run level.

What it does

The beep test, also called the multi-stage fitness test or the 20 m shuttle run, estimates aerobic fitness from how long you can keep up with a rising pace. You run 20 m shuttles between two lines, turning on each beep. The beeps get faster at each level until you can no longer reach the line in time.

The best-known equation comes from Leger and colleagues. It predicts VO2 max from the final running speed and age. The equation's speed term is X = 8 + 0.5 x level, so level 1 is 8.5 km/h and level 12 is 14.0 km/h.

The age term matters. The original equation was developed with children and adolescents, and later work applied it to adults by using age 18 for anyone older. This page follows that convention. The age used in the calculation is shown separately, so you can see when the cap applies.

A beep test score is only an estimate. Pacing, turning technique, surface, footwear, motivation, and the exact protocol all affect the result. The test also stops at a whole or half level, so the estimate cannot be more precise than the level resolution. Treat the number as a training benchmark, not a laboratory measurement.

How to use

1. Enter your age in years.
2. Enter the last level you completed. If your protocol records a partial level, use the half-level value.
3. Read the estimated VO2 max in mL/kg/min.
4. Read the final shuttle speed in km/h.
5. Check the age used. If you are over 18, the tool uses 18.
6. Compare results only when the test protocol and surface are the same.

Formula

VO2 max

Estimated maximal oxygen uptake in mL/kg/min.

X

Final shuttle speed in km/h.

A

Age in years, capped at 18 for adults in this calculator.

level

Last completed beep test level.

0.5

Speed increase per level in km/h.

8

Intercept in the speed equation. Level 1 is 8.5 km/h.

The equation is a population regression, not a direct measurement of oxygen uptake. It was validated for ages 8 to 19, and adult use relies on the age-18 convention. The 0.5 level option is an interpolation; the original equation expects a completed stage. A laboratory graded exercise test is the accurate way to measure VO2 max.

Worked example

Reference table

Limits

• The equation estimates VO2 max from a field test. It is not a lab measurement.
• The original validation was for ages 8 to 19. Adult use relies on the age-18 convention.
• The result depends on the exact protocol, surface, turns, and how a missed beep is judged.
• A half-level entry is an interpolation and may not match a strict stage-based score.
• The estimate does not account for training status, body composition, or health conditions.

Common mistakes

• Entering the number of shuttles instead of the level.
• Using an age over 18 in the equation when the adult convention is intended.
• Rounding a partial level up to the next whole level.
• Comparing scores from different protocols or surfaces as if they were the same test.
• Treating the VO2 max estimate as a diagnosis or as a guarantee of race performance.

Try it yourself

Quick checks. Answers sit tucked under each question.

Questions

Sources

• PubMed: A maximal multistage 20-m shuttle run test to predict VO2 max
• Karlsruhe Institute of Technology: 20 m shuttle run test protocol

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