Ape Index Calculator - Wingspan to Height Ratio

Your details

Fingertip to fingertip with both arms outstretched horizontally at shoulder height. Measure against a wall for accuracy.
cm
Your standing height without shoes.
cm
Adds a sport-specific note about how your ape index may affect performance.
Ape Index (ratio)Positive ape index
1.023

Wingspan divided by height - 1.0 means equal proportions

Ape Index (difference)4
CategoryPositive (arms slightly longer than height)
Sport insightA positive ape index can help with long reach between holds, dynamic moves, and spanning cruxes. Your +4.0 cm advantage is considered beneficial in climbing.
Wingspan179
Height175
1.023 ratio
Very negative<0.95Negative0.95-0.99Neutral0.99-1.01Positive1.01-1.05Very positive1.05+

Your ape index ratio is 1.023: your wingspan is 4.0 cm longer than your height.

  • The population average ratio is close to 1.0, reflecting Leonardo da Vinci's Vitruvian Man principle that wingspan roughly equals height.
  • A ratio above 1.0 is considered advantageous in reach-dependent sports like rock climbing, swimming, boxing, and basketball.
  • NBA players average a ratio of approximately 1.063 - your result of 1.023 falls below that benchmark.
  • The ape index is one anatomical factor among many. Technique, strength, flexibility, and training history consistently outweigh reach advantages in research on sport performance.

Next stepFor climbing, remember that grip strength and training volume are the primary predictors of climbing grade.

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