Board footage is the term used for the volume of a piece of lumber. The length, width and depth of a board is required to calculate board footage.

### Measure the dimensions

Measure the length from top to bottom, width across and thickness of the board using a measuring tape. Convert all measurements to inches.

### Multiply length, width and depth

Multiply the length, width and depth. For a board that is 72 inches long, 8 inches wide and 2 inches deep, the result is 1,152.

### Divide by 144

When using inches in the calculation, divide by 144, according to The Hardwood Store of North Carolina. In the example, 1,152 divided by 144 results in 8 board feet.