What Is Standing Reach?
Standing reach is the maximum height an individual can reach flat-footed with one arm fully extended straight overhead. In basketball, standing reach is a far more critical metric than head height. It defines your actual starting point before you leave the ground to block a shot, pull down a rebound, or dunk the ball.
Because players have different arm lengths and shoulder widths, two athletes who are both 6'4" can have completely different standing reaches. Therefore, measuring or accurately estimating your reach is the first step in creating a vertical jump training plan.
The Standing Reach Estimation Formula
While physically measuring your reach is always recommended, you can estimate it mathematically. For the average human body, standing reach averages **1.33 times your height**. The core formula is:
\[\text{Estimated Reach} = \text{Height} \times 1.33\]
Refining the Estimate with Wingspan
If you have exceptionally long or short arms relative to your height (known as your Ape Index), the standard formula will be off. Our calculator refines the estimate if you supply a wingspan measurement. It applies the following equation:
\[\text{Estimated Reach} = (\text{Height} \times 1.33) + 0.5 \times (\text{Wingspan} - \text{Height})\]
This formula adjusts the reach upward if your wingspan exceeds your height (positive Ape Index) or downward if your wingspan is shorter than your height.
Step-by-Step Guide to Measuring Your Standing Reach
To ensure absolute accuracy for dunk calculations, we recommend taking a physical measurement. Follow this guide:
- Find a flat, vertical wall with high clearance (such as an exterior brick wall or garage door).
- Remove your shoes to measure your true flat-footed reach, or wear your basketball shoes if you want to calculate your "in-game" reach.
- Stand side-on or face-on against the wall, with your heels flat on the floor.
- Extend the arm closest to the wall as high as possible. Do not lift your heels or stand on your tiptoes.
- Mark the wall with your fingertips (use a piece of chalk or post-it note).
- Use a tape measure to measure the distance from the floor to the mark. This is your true Standing Reach.
Why Wingspan and Ape Index Matter in Basketball
In basketball combine settings, coaches pay close attention to wingspan. A player with long arms can play "taller" than their head height suggest. For example, if a player is 6'3" but has a 6'9" wingspan, their standing reach will match that of a standard 6'6" player with average proportions.
Consider these extreme NBA comparisons:
- Kawhi Leonard: Height: 6'7″ · Wingspan: 7'3″. His massive arm span gives him a standing reach of roughly 8'10″, allowing him to grab rebounds and lock down players who are much taller.
- Tacko Fall: Height: 7'6″ · Wingspan: 8'2″. His standing reach is an astronomical 10'2″. He can dunk the basketball without leaving the ground.
Frequently Asked Questions
Height is the distance from the floor to the top of your head. Standing reach is the distance from the floor to the tips of your fingers when reaching straight up with one hand while keeping your heels flat. Because arm length varies, standing reach is a much more direct indicator of playing height in basketball.
The standard height × 1.33 multiplier is highly accurate (within 1–2 inches) for the majority of people with standard proportions. However, if you have a positive or negative ape index, the formula will under- or over-estimate your reach. That is why our calculator lets you add your wingspan to refine the result.