How to use stacked firewood cord measure
What this calculation does
A cord comparison uses the outside dimensions of a ranked, well-stowed stack, including the ordinary air spaces between the pieces.
Measure stack height, front-to-back depth and length in feet, using the same outer boundaries for the full stack.
Enter the measurements
- Stack height: Measure the vertical height of the ranked stack.
- Stack depth/width: Measure its front-to-back depth.
- Stack length: Measure along the length of the stack.
Formula and variables
Stacked volume = stack height × stack width × stack length. Cord equivalents = stacked cubic feet ÷ 128.
Stacked volume is the product of the three outside dimensions. A cord equivalent divides that stacked volume by 128 cubic feet.
Read the result
A 4×4×8 ft well-stowed stack measures 128 stacked cubic feet, or one cord equivalent.
Worked example
Inputs: A ranked, well-stowed stack measuring 4 × 4 × 8 ft
- Volume = 4×4×8 = 128 stacked ft³.
- Cord equivalents = 128÷128 = 1 cord.
Expected result: 128 stacked cubic ft, equal to 1 cord
Frequently asked questions
Does a thrown pile count the same way?
No. The stated cord measure assumes firewood is ranked and well stowed; loose volume is different.
Does this verify a firewood sale?
No. Confirm the seller’s unit and applicable local transaction rules independently.
Conditions, presets and technical notes
A cord is a stacked measure that includes spaces between pieces; the estimate assumes the entered pile is ranked and well stowed. Face cords, loose thrown volume, species, moisture, weight and a particular transaction’s legal requirements are not interchangeable or inferred.
