Enter the weight (lbs) and the volume (ft^3) into the Specific Weight Calculator. The calculator will evaluate the Specific Weight. 

Specific Weight Formula

The following two example problems outline the steps and information needed to calculate the Specific Weight.

SPW = W / V


  • SPW is the Specific Weight (lbs/ft^3)
  • W is the weight (lbs) 
  • V is the volume (ft^3) 

How to Calculate Specific Weight?

The following steps outline how to calculate the Specific Weight.

  1. First, determine the weight (lbs). 
  2. Next, determine the volume (ft^3). 
  3. Next, gather the formula from above = SPW = W / V.
  4. Finally, calculate the Specific Weight.
  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.

weight (lbs) = 10

volume (ft^3) = 3

SPW = W / V = ?