Select your body part of choice with a measurement, a bodybuilder, and the desired muscle group.
User selects Arnold Schwarzenegger for his muscle proportions for those muscle groups
User selects Thighs
User enters their Thigh size, 23 inches
User wants to see their ideal calf size
Click convert to see ideal calf size
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Arnold: 28in (thighs) / 20in (calves) = 1.425 (ratio)
User: 23in (thighs) * 1.425 (Arnolds ratio) = 16.14in
Using Arnold Schwarzenegger's muscle ratio the ideal calf size for the user is 16.14in with 23in thighs
