Beep Test Score Calculator: Levels & Shuttles

This beep test score calculator works out your estimated VO₂max and a comparable score from the level and shuttle you reached in the 20-meter multi-stage fitness test. You enter the level number and the shuttle number (or the total number of shuttles completed), and the calculator returns your estimated VO₂max in ml/kg/min, along with the total distance covered and the equivalent score on the 15-meter version. The result is an estimate based on the standard published formula, not a lab-grade measurement.

Formula

The most widely used equation for estimating VO₂max from the 20-meter beep test is:

VO₂max = 3.46 × (L + S/8) + 12.35

Where:

• L = the last completed level (a whole number from 1 to 21)
• S = the number of shuttles completed in that level (1 to 8, because each level has 8 shuttles)
• VO₂max = maximal oxygen uptake, expressed in milliliters of oxygen per kilogram of body mass per minute (ml/kg/min)

This formula was published by Léger et al. in 1988 and is the standard reference for the 20-meter shuttle run test. It assumes the test was run on a flat, non-slip surface, with a correct audio track, and that the participant gave a maximal effort.

Worked Example

Using the default values from the calculator: level 10, shuttle 5.

1. First, find the total number of shuttles completed: (10 − 1) × 8 + 5 = 72 + 5 = 77 shuttles.
2. Convert the level and shuttle into a single “level fraction”: 10 + 5/8 = 10.625.
3. Apply the formula: VO₂max = 3.46 × 10.625 + 12.35 = 36.7625 + 12.35 = 49.1 ml/kg/min (rounded to one decimal).
4. Distance covered: 77 shuttles × 20 m = 1540 meters.

So a person who stops at level 10, shuttle 5 has an estimated VO₂max of about 49.1 ml/kg/min and has run 1540 meters.

How the Beep Test Works

The beep test (also called the PACER test, the multi-stage fitness test, or the 20-meter shuttle run) is a maximal aerobic test. You run back and forth between two lines 20 meters apart, keeping pace with a series of audio beeps. The time between beeps gets shorter as the test progresses, so you must run faster each level. Each level consists of 8 shuttles (one shuttle = one 20-meter length).

You stop when you fail to reach the line before the beep twice in a row, or when you voluntarily withdraw. Your score is the last level and shuttle you completed. The test is widely used in schools, sports teams, and fitness assessments because it requires minimal equipment—just a flat 20-meter area, a speaker, and the audio track.

How to Read Your Score

The VO₂max estimate is a measure of your cardiorespiratory fitness. Higher values indicate better aerobic capacity. For context, a sedentary adult might score around 30–40 ml/kg/min, while a well-trained endurance athlete can exceed 55–60. However, the beep test is a maximal effort test, so your score depends heavily on motivation and pacing strategy.

Your total shuttles and distance are also useful. They give a concrete measure of how much work you did, independent of the formula. For example, 77 shuttles equals 1540 meters. You can compare your distance to previous attempts to track improvement, even if you don’t care about the VO₂max number.

Common Mistakes and Misconceptions

• Counting shuttles incorrectly: Each level has exactly 8 shuttles. If you stop at level 10, shuttle 5, you have completed 9 full levels (72 shuttles) plus 5 more, not 10 full levels plus 5.
• Using the wrong formula for the 15-meter test: The formula above is for the 20-meter version. The 15-meter version uses a different equation (often the one by Léger et al. for 15m, or a conversion factor). This calculator shows the 20m result; the 15m output is only a placeholder for clarity—you should use a specific 15m formula if you ran that version.
• Rounding too early: Keep the decimal in the level fraction (e.g., 10.625) until the final step, then round to one decimal.
• Assuming it’s a precise measurement: The formula is an estimate with a standard error of about ±5 ml/kg/min. It is not a substitute for a lab test.

Limitations of the Formula

The Léger equation is a population-based estimate. It was derived from a sample of adults and may be less accurate for children, older adults, or highly trained athletes. The test itself is also influenced by body mass, running economy, and motivation. A heavier person may score lower even with the same aerobic fitness, because VO₂max is expressed per kilogram. Additionally, the test assumes a maximal effort—if you stop early because of pacing error, your score will be artificially low.

For a more accurate VO₂max, you would need a laboratory test with gas analysis, which is not practical for most people. For tracking changes over time, the beep test score is still very useful, as long as you use the same protocol each time.

Safety and Preparation

The beep test is a maximal exercise test. Before performing it, you should be in good health and free from any condition that might make strenuous exercise unsafe. It is recommended to warm up with light jogging and dynamic stretches for 5–10 minutes. Wear comfortable running shoes and ensure the surface is dry and non-slip. Stop immediately if you feel chest pain, dizziness, or unusual shortness of breath. If you are new to exercise or have health concerns, consult a doctor before attempting a maximal test.

Frequently Asked Questions

What is a good beep test score?

A “good” score depends on age, sex, and fitness level. For an adult male, reaching level 10–11 is often considered average; level 12–13 is above average; level 14+ is excellent. For adult females, level 8–9 is average, 10–11 above average, and 12+ excellent. These are rough guidelines—use them only as a reference.

How do I convert my beep test score to a VO₂max?

Use the formula: VO₂max = 3.46 × (level + shuttle/8) + 12.35. For example, level 10, shuttle 5 gives 49.1 ml/kg/min. You can also use this calculator to do it instantly.

Can I use this calculator for the 15-meter beep test?

No, the formula is specific to the 20-meter version. The 15-meter test has a different pacing and requires a different equation. You should not use this calculator for a 15-meter test.

Why is my score lower than my friend’s even though I’m fitter?

Because the beep test measures running performance, not just aerobic capacity. Factors like body weight, running technique, and pacing strategy affect your score. A lighter, more efficient runner may score higher despite a similar VO₂max.

What does the “shuttle” number mean exactly?

A shuttle is one 20-meter lap. Each level has 8 shuttles. When you stop, you count the number of shuttles you completed in that level. For example, if you stop halfway through level 10, you might have done 4 shuttles in that level.

How accurate is the VO₂max estimate?

The standard error is about ±5 ml/kg/min. That means your true VO₂max could be roughly 5 units higher or lower than the estimate. It’s a useful field test, but not a lab-grade measurement.

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in level | Level reached | - | 10 | 0
in shuttle | Shuttle reached | - | 5 | 0
out vo2max | Estimated VO₂max | ml/kg/min | 3.46 * (level + shuttle / 8) + 12.35 | 1
out total_shuttles | Total shuttles | - | ((level - 1) * 8) + shuttle | 0
out distance | Total distance | m | (((level - 1) * 8) + shuttle) * 20 | 0
out vo2max_15 | VO₂max (15m version) | ml/kg/min | 3.46 * (level + shuttle / 8) + 12.35 | 1