Enter the axle-to-axle length of your bow and select the type of bow to calculate the recommended brace height. The brace height is the distance from the deepest part of the bow's grip to the string.

Brace Height Formula

The following formulas are used to calculate the brace height based on the type of bow:

For Recurve Bow: BH = ATA / 8
For Compound Bow: BH = ATA / 10
For Longbow: BH = ATA / 7

Variables:

  • BH is the brace height (inches)
  • ATA is the axle-to-axle length of the bow (inches)

To calculate the brace height, divide the axle-to-axle length by the factor specific to the type of bow.

What is Brace Height?

Brace height is the distance from the deepest part of the bow's grip to the string. It is an important measurement for archers as it affects the performance and feel of the bow. A proper brace height can improve accuracy, reduce vibration, and increase comfort during shooting.

How to Calculate Brace Height?

The following steps outline how to calculate the Brace Height.


  1. First, measure the axle-to-axle length of the bow (ATA) in inches.
  2. Next, select the type of bow you have (recurve, compound, or longbow).
  3. Use the appropriate formula based on the type of bow to calculate the brace height (BH).
  4. Finally, calculate the Brace Height (BH) in inches.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Axle-to-Axle Length (ATA) = 68 inches

Bow Type = Recurve

Using the formula for a recurve bow, the brace height would be calculated as follows:

BH = ATA / 8 = 68 / 8 = 8.5 inches