Hardwood Flooring Calculator
Calculate hardwood flooring quantities and waste.
Last updated 2026-08-21
What Is a Hardwood Flooring Calculator?
A hardwood flooring calculator finds the square footage of hardwood you need to order by area, with a waste factor for cuts and grain sorting. It separates the order quantity from the waste so you can see what you are buying extra. It is for homeowners installing prefinished or site finished hardwood planks.
How It Works
Area = Length × Width. To order = Area × (1 + Waste ÷ 100). Waste = To order − Area.
Example
A 12 ft × 10 ft room with 10% waste: 120 sq ft → order 132 sq ft, 12 sq ft of waste.
How to Calculate
- Measure the length and width of the room in feet. A 12 by 10 foot room is 120 square feet.
- Choose a waste factor. Ten percent is standard for prefinished planks.
- Multiply the area by 1 plus the waste as a decimal. One hundred twenty times 1.10 equals 132 square feet to order.
- Find the waste amount by subtracting the room area from the order quantity. One hundred thirty two minus 120 is 12 square feet of waste.
- Convert the order quantity to boxes using the coverage per box, and round up to whole boxes.
Hardwood Waste by Installation Method
| Installation Type | Recommended Waste |
|---|---|
| Prefinished, straight lay | 10% |
| Site finished plank | 15% |
| Herringbone or chevron | 15% |
| Diagonal install | 15% |
| Wide plank with grain sorting | 12 to 15% |
Sources
Frequently Asked Questions
What waste factor for hardwood?
10% is standard for prefinished planks; 15% for site-finished or patterned installations.
Is hardwood sold by the square foot?
Yes, both by the square foot and by the box — box coverage is printed on the carton.
Why is waste higher for hardwood?
Planks are cut to length at each row end, and grain/color sorting often leaves short unusable pieces.
Estimate the cost with the Flooring Cost Calculator or browse Flooring Calculators