Tools · by Milko Georgiev

Athletic Calculator

In 2004 I examined several formulas by Johns, Robinson, Molero, Jumen, Raymundo, Flores and others. They all failed to give adequate results, so I started collecting athletes' data, and after 10 years of experience I created my own formula.

Optimal weight

The optimal lean body mass for a complete athlete.

Sex

Height (cm)

Wrist (cm)

Wrist circumference improves accuracy.

Your result

Choose sex and enter your height to see your optimal lean body mass.

Muscularity index

The level of physique development. Higher functional hypertrophy and lower body fat give a higher index.

Biceps relaxed (cm)

Biceps flexed (cm)

Scale

20–24	excellent
15–19	very good
12–14	good
10–11	satisfactory
5–9	weak
1–4	very weak

Natural maximum LBM

This formula by Casey Butt shows the maximum muscular development without the use of anabolic steroids. Males only — enter height and wrist in Optimal weight and set sex to male.

Ankle (cm)

Body fat (%)

Your result

Enter ankle and body fat to see your natural maximum lean body mass and measurements.