Enter the wood radius (ft), the wood length (ft), and the mass of the wood (lbs) into the Wood Density Calculator. The calculator will evaluate and display the Wood Density. 

Wood Density Formula

The following formula is used to calculate the Wood Density. 

Dwood = m / (pi*wr^2*wl)

  • Where Dwood is the Wood Density (lbs/ft^3)
  • wr is the wood radius (ft) 
  • wl is the wood length (ft) 
  • m is the mass of the wood (lbs) 

How to Calculate Wood Density?

The following example problems outline how to calculate Wood Density.

Example Problem #1

  1. First, determine the wood radius (ft).
    1. The wood radius (ft) is given as 3.
  2. Next, determine the wood length (ft). 
    1. The wood length (ft) is calculated as: 20.
  3. Next, determine the mass of the wood (lbs). 
    1. The mass of the wood (lbs) is found to be: 1000.
  4. Finally, calculate the Wood Density using the formula above: 

Dwood = m / (pi*wr^2*wl)

Inserting the values from above yields: 

Dwood = 1000 / (pi*3^2*20) = 1.7683 (lbs/ft^3)

Example Problem #2

The variables needed for this problem are provided below:

wood radius (ft) = 6

wood length (ft) = 30

mass of the wood (lbs) = 1500

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. 

Dwood = m / (pi*wr^2*wl) = (lbs/ft^3)