How to measure flooring square feet
Measure a room, include closets and odd corners, then add enough waste for cuts and mistakes.
Flooring math is mostly square footage, but the little areas matter. Closets, alcoves, and angled cuts can change how many boxes you need.
1. Start with the main rectangle
Measure the room length and width at the widest useful points. Multiply them to get square feet.
Example: 14 ft x 12 ft = 168 sq ft.
2. Add closets and side areas
Measure closets, pantry spaces, and small bump-outs separately. Add those square feet to the main room total.
3. Break odd rooms into rectangles
For an L-shaped room, split it into two rectangles. Measure each rectangle, multiply length by width, then add the two results.
4. Add waste
Waste covers cuts, damaged pieces, pattern matching, and mistakes. A simple room may need 5% to 10%. Diagonal layouts, stairs, complicated cuts, or patterned material can need more.
5. Use box coverage
Flooring is usually sold by the box. If one box covers 23.5 sq ft, divide your waste-adjusted square footage by 23.5 and round up.
Buy all boxes from the same lot when you can. Color and texture can shift slightly between production runs.