Enter the OSB length, OSB width, and thickness into the calculator to determine the total OSB (oriented strand board) weight.

OSB Weight Formula

The following formula is used to calculate the weight of OSB (oriented strand board). 

OSBW = L*W*T * D
  • Where OSBW is the weight of the oriented strand board (lbs)
  • L is the length of the OSB board (in)
  • W is the width of the OSB board (in)
  • T is the thickness of the OSB board (in)
  • D is the density of the board (lbs/in^3)
    • The average density of OSB is .0231 lbs/in^3

To calculate the OSB weight, multiply the length, width, and thickness of the board to get the volume, then multiply the volume by the density.

How to calculate OSB weight?

Example Problem:

The following example outlines how to calculate the weight of OSB.

First, determine the OSB length. In this example, the length is 30 inches.

Next, determine the OSB width. The width is measured to be 20 inches.

Next, determine the OSB thickness. This is measured to be .500 inches.

Finally, calculate the OSB weight using the formula above:

OSBW = L*W*T * D

OSBW = 30*20*.5 * .0231

OSBW = 6.93 lbs