Enter your arm span or wingspan into the calculator to determine your draw length.

Draw Length Calculation Formula

The following formula is used to calculate the draw length from your arm span or wingspan. 

Draw Length = Arm Span / 2.5

Variables:

  • Draw Length is the measurement from the nocking point of the bowstring to the throat of the grip plus 1.75 inches (inches)
  • Arm Span is the measurement from fingertip to fingertip with arms extended horizontally (inches)

To calculate the draw length, divide the arm span by 2.5.

What is Draw Length Calculation?

Draw length calculation refers to the process of determining the appropriate length of draw for an archer, ensuring optimal performance and comfort when shooting. This involves measuring the archer’s arm span or wingspan and applying the relevant formula to derive the draw length. Proper draw length calculation is crucial for achieving accuracy and consistency in archery.

How to Calculate Draw Length?

The following steps outline how to calculate the draw length using the given formula.

  1. First, determine your arm span or wingspan by measuring from fingertip to fingertip with arms extended horizontally.
  2. Use the formula: Draw Length = Arm Span / 2.5.
  3. Calculate the draw length by dividing the arm span by 2.5.
  4. After inserting the variable 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.

Arm Span = 70 inches

FAQ

1. What is draw length?

Draw length is the distance from the nocking point of the bowstring to the throat of the grip plus 1.75 inches, representing the ideal position for the archer’s hands and arms when drawing the bow.

2. Why is draw length important?

Proper draw length ensures that the archer can shoot comfortably and accurately, reducing the risk of injury and improving overall performance.

3. How do I measure my arm span?

To measure your arm span, extend your arms horizontally and measure from the tip of one middle finger to the tip of the other middle finger.

4. Can I use this calculator for different types of bows?

Yes, this calculator provides an estimate for draw length that can be used for various types of bows. For specific recommendations, consult a professional archery coach or a bow technician.

5. Is the calculator accurate?

The calculator provides an estimate of your draw length based on the inputs