Enter the object’s volume and density into the Float Weight Calculator to compute the object’s weight (force) using W = ρVg. (Note: this is not buoyant force; buoyancy depends on the fluid density.)

Float Weight Calculator

Enter any 2 values to calculate the missing variable

Related Calculators

Float Weight Formula

The following two example problems outline the steps and information needed to calculate the Float Weight (the object’s weight force) from its volume and density.

FW = V * D * 9.80665

Variables:

  • FW is the Float Weight (weight force) (N)
  • V is the object’s volume (m^3) 
  • D is the object’s density (kg/m^3) 

How to Calculate Float Weight?

The following steps outline how to calculate the Float Weight.

  1. First, determine the object’s volume (m^3). 
  2. Next, determine the object’s density (kg/m^3). 
  3. Next, gather the formula from above = FW = V * D * 9.80665.
  4. Finally, calculate the Float 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.

object’s volume (m^3) = 10

object’s density (kg/m^3) = 20

FW = V * D * 9.80665 = 10 * 20 * 9.80665 = 1961.33 N