Ape Index Calculator

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Calculates the ratio of arm span to height, sometimes used in climbing assessments.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Arm Span and Height in the units shown.

Step 2

Read Ape Index Ratio and Ape Index (cm) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Arm Span: 175 cm; Height: 170 cm

Ape Index Ratio: 1.029411765; Ape Index (cm): 5 cm

Arm Span: 180 cm; Height: 170 cm

Ape Index Ratio: 1.058823529; Ape Index (cm): 10 cm

Arm Span: 165 cm; Height: 175 cm

Ape Index Ratio: 0.9428571429; Ape Index (cm): -10 cm

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