Enter the volume and density into the calculator to determine the weight of the cinder block. This calculator can also evaluate any of the variables given the others are known.

Cinder Block Weight Formula

The following formula is used to calculate the weight of a cinder block.

W = V * D

Variables:

  • W is the weight of the cinder block (lbs)
  • V is the volume of the cinder block (cubic feet)
  • D is the density of the cinder block (lbs/cubic foot)

To calculate the weight of a cinder block, multiply the volume of the cinder block by the density of the cinder block.

What is a Cinder Block Weight?

A cinder block weight refers to the mass of a cinder block, also known as a concrete masonry unit (CMU). These blocks are commonly used in construction due to their strength and durability. The weight of a cinder block can vary significantly depending on its size and the materials used to make it. On average, a standard cinder block measuring 8x8x16 inches weighs approximately 28-35 pounds, although lightweight versions can weigh as little as 28 pounds while heavier, denser blocks can weigh up to 40 pounds or more.

How to Calculate Cinder Block Weight?

The following steps outline how to calculate the Cinder Block Weight.


  1. First, determine the volume of the cinder block (V) in cubic feet.
  2. Next, determine the density of the cinder block (D) in lbs/cubic foot.
  3. Next, gather the formula from above: W = V * D.
  4. Finally, calculate the Cinder Block Weight (W) in lbs.
  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.

Volume of the cinder block (V) = 5 cubic feet

Density of the cinder block (D) = 10 lbs/cubic foot