Wing Span Calculator
What is the Wing Span Calculator?
A Wing Span Calculator, often referred to as an Ape Index calculator, measures the ratio between an individual's arm span and their total height. While typically used in biological studies, it has gained significant popularity in sports like rock climbing, basketball, and swimming, where a longer reach can provide a distinct mechanical advantage.
How to Measure Your Wing Span
To get an accurate measurement, stand against a flat wall with your arms outstretched horizontally. Have a partner measure the distance from the tip of your middle finger on one hand to the tip of the middle finger on the other. Ensure your back and arms are flat against the surface for the most precise data. Once you have this number and your height, you can determine your reach profile.
Understanding Your Ape Index
The results of our wing span calculator are typically interpreted in two ways: a ratio or a simple difference. A ratio of 1.0 means your wing span is exactly equal to your height. A ratio greater than 1.0 (or a positive difference) indicates that your reach is longer than your height, which is often called a "positive ape index." Many elite athletes in reach-dominant sports possess a positive index, allowing them to cover more ground or reach higher holds.
Frequently Asked Questions
In the context of sports like rock climbing or boxing, a high Ape Index is generally considered beneficial as it provides extra reach without adding the weight associated with being taller.
For most people, the wing span is roughly equal to their height, resulting in a ratio of 1.0 or a difference of zero.
Just like height, your wing span is determined by your skeletal structure and will stop growing once you reach physical maturity in your late teens or early twenties.