Straight layout
Start with 10% waste for most rectangular rooms.
Hardwood planning
Hardwood Flooring Calculator
Calculate hardwood square footage first, then use the full flooring calculator when you need material cost, installation cost, boxes, waste by pattern, and a printable shopping list.
Square footage calculator
Hardwood room area calculator
Enter each room size and add rooms when the same hardwood product runs through connected spaces.
Results update instantly as you type.
Rectangle inputs
Length x width for rooms, slabs, and patios.
Active formula: 22 x 32 = 704.00 sq ft
Result
704.00 sq ft
About the size of a 2-car garage.
That is enough floor area for a medium living room plus two average bedrooms.
Live SVG preview
The shape scales to match your measurements, updates labels instantly, and keeps the grid in sync.
Live
Scaled to your measurements, so the preview reflects the same room math shown in the result panel.
Diagonal or herringbone
Use 15-20% waste because pattern cuts create more offcuts.
Keep repair stock
Buy at least one extra box from the same lot for future board replacement.
Need the measuring workflow? Read how to measure for hardwood floors.