What is the beep test?

The beep test (officially the 20-Metre Multi-Stage Fitness Test, also called the bleep test or PACER) is a progressive aerobic capacity test. You run 20 m back and forth in time with audio beeps. Each level increases the running speed by 0.5 km/h, starting at 8.5 km/h at level 1. When you can no longer reach the line before the beep twice in a row, the test ends and your last level and shuttle are recorded.

What formula does this calculator use?

It uses the Léger et al. (1988) regression equation: VO2max = 31.025 + 3.238v − 3.248A + 0.1536·A·v, where v is the running speed at the last completed level in km/h and A is age in years. This is the original validated formula published alongside the test protocol and is the standard used in physical education, sport science, and military fitness testing worldwide.

How accurate is the beep test VO2 max estimate?

Léger et al. reported a correlation of r = 0.84 between predicted and directly measured VO2 max in the validation study. That means it is a good field estimate but not as precise as a laboratory graded exercise test with gas analysis. Motivation, pacing, and test conditions (surface, temperature, footwear) all influence your score.

What is a good beep test score?

It depends heavily on age and sex. A fit 25-year-old male reaching level 12–13 (VO2 max roughly 53–56 ml/kg/min) would be rated excellent. A fit 25-year-old female reaching level 9–10 (roughly 44–47 ml/kg/min) would be excellent for her norms. Many professional footballers and rugby players score in the 13–15 range; elite endurance athletes can reach level 17 or higher.

How is speed determined at each level?

The original Léger protocol sets the speed at level L as 8 + (0.5 × L) km/h. Level 1 runs at 8.5 km/h, level 2 at 9.0 km/h, and so on. The beep interval shortens at each level so that the 20 m must be covered in the shorter time. The number of shuttles per level also varies (from 7 at level 1 up to 21–24 at the highest levels) to fill a complete minute at each speed.

Does the calculator work for children?

The Léger formula was validated on subjects aged 7–45, so it is applicable to school-age children. However, the fitness rating bands shown are based on adult ACSM norms. For children and adolescents the same VO2 max figure means something different; consult age-specific paediatric reference tables for a precise category.

Beep Test Calculator

The beep test (20-Metre Multi-Stage Fitness Test, bleep test, or PACER) is one of the most widely used field tests in sport science, physical education, military selection, and elite sport. You run 20 m back and forth in time with audio cues that speed up every level. The last level and shuttle you complete before you can no longer match the beeps is your score — and from that single score, your estimated VO₂ max and a fitness rating can be calculated using a validated regression equation.

How it works

The test protocol (Léger et al. 1988) starts at 8.5 km/h at level 1 and increases by 0.5 km/h with each level. A 20 m shuttle must be completed before each beep. The speed at level L is:

v (km/h) = 8 + 0.5 × L

From your final speed and age, the Léger et al. (1988) formula estimates VO₂ max directly:

VO₂max = 31.025 + 3.238v − 3.248A + 0.1536 · A · v

where v is the running speed in km/h at the last completed level and A is age in years. The age term (−3.248A) corrects downward for older athletes, while the interaction term (+0.1536·A·v) partially offsets that at high speeds — reflecting the observation that older athletes who still sustain high speeds have proportionally higher fitness for their age group.

The calculator also counts every shuttle you completed, multiplies by 20 m, and totals the distance covered and an approximate test duration by simulating the full protocol shuttle by shuttle.

Worked example

A 25-year-old male reaches level 10, shuttle 8 before the test ends.

Speed at level 10: v = 8 + 0.5 × 10 = 13.0 km/h

VO₂max:

= 31.025 + 3.238 × 13.0 − 3.248 × 25 + 0.1536 × 25 × 13.0
= 31.025 + 42.094 − 81.200 + 49.920
= 41.84 ml/kg/min

Total shuttles to that point: 7 + 8 + 8 + 9 + 9 + 10 + 10 + 11 + 11 + 8 = 91 shuttles = 1820 m covered.

Fitness rating for a 25-year-old male: Fair to Good (ACSM norms; Good threshold ≈ 43 ml/kg/min for this age bracket).

Last level	Speed	VO₂ max (age 25)	Rating (male 25)
Level 7, shuttle 10	11.5 km/h	~37	Poor
Level 10, shuttle 8	13.0 km/h	~42	Fair
Level 13, shuttle 5	14.5 km/h	~51	Excellent
Level 15, shuttle 3	15.5 km/h	~58	Superior

Formula note

The Léger regression was validated on 188 subjects aged 7–45 with a correlation of r = 0.84 against directly measured VO₂ max on a treadmill. It is the most widely cited beep-test prediction equation and is used by FIFA, UEFA, the British Army, and numerous national sports institutes. Ramsbottom et al. (1988) published a UK version with slightly different constants, but Léger remains the international standard because the test protocol itself was developed alongside it.

VO₂ max fitness categories follow ACSM (American College of Sports Medicine) sex-and-age norms. All calculations run entirely in your browser — no data is uploaded or stored.