Spider Stamina

: Athletic Calculator

by Milko Georgiev

To calculate you stamina program use Stamina Calculator.

Optimal Weight

This optimal weight calculator uses an unique formula. In 2004 I examined several formulas (work by Johns, Robinson, Molero, Jumen, Raymundo, Flores and others) and then I made my own formula. Through the years, using my experience and vision I calibrated the new formula.
Now this calculator helps you to determine the optimal body weight for a complete athlete. An athlete with minimum body fat and optimal lean body mass.

Athlete's data

Sex Height cm Wrist cm

Wrist circumference field improves accuracy.

Muscularity Index

This index shows the level of physique development of an athlete. Higher functional hypertrophy and lower body fat gives higher index of muscularity.

Athlete's data

Biceps circumference released cm and flexed cm

Natural Male Maximum Lean Body Mass

This formula by Casey Butt shows the maximum muscular development without use of anabolic steroids.

Athlete's data

Enter height and wrist data in Optimal Weight section, set sex to male.

Ankle cm Body fat %