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Calcimator

Bow Poundage Calculator

Calculate actual draw weight at your draw length, let-off percentage, and holding weight for compound, recurve, and longbows.

Inputs

lbs
in
in

Results

Weight at Your Draw

60 lbs

≈ 7 gallons of milk

Holding Weight

12 lbs

≈ 3 bags of sugar

Let-Off80%
How to Use This Calculator
  1. Enter the Rated Peak Weight and Rated Draw Length from your bow's limb specs.
  2. Set your actual Draw Length in inches.
  3. Select Bow Type (Compound, Recurve, or Longbow).
  4. Review the Weight at Your Draw Length and the compound Let-Off percentage.
  5. Use Holding Weight for compound bows to understand what you hold at full draw.

How the result changes with Rated Peak Weight

Rated Peak WeightWeight at Your DrawHolding Weight
1919 lbs3.8 lbs
4242 lbs8.4 lbs
6969 lbs13.8 lbs
9191 lbs18.2 lbs

What each input means

Rated Peak Weight
Bow's rated draw weight (marked on limb).
Rated Draw Length
Draw length the bow is rated at (usually 28" for recurve).
Your Draw Length
Your measured draw length.
Bow Type
Bow type determines how weight scales with draw length.

What each result means

Weight at Your Draw
Actual draw weight at your draw length.
Let-Off
Percentage of weight reduction at full draw (compound only).
Holding Weight
Weight you hold at full draw.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Rated Peak Weight = 60, Rated Draw Length = 30, Your Draw Length = 28, Bow Type = 1 = 4 input(s) provided
  2. Calculate Weight at Your Draw
    60 = 60
  3. Calculate Let-Off
    80 = 80%

Engine last updated . Checked against 2 independently-derived tests — how we verify calculators.

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