How flooring quantity is calculated
Calculate room area, add waste, then divide the adjusted square footage by the coverage provided by each box.
Flooring example
A 20 × 12 foot room contains 240 square feet. With 10% waste, the material target becomes 264 square feet.
Diagonal installations, complex rooms and patterned flooring may require additional material.
Frequently asked questions
How much extra flooring should I buy?
The required allowance varies with room shape, layout and material type.
Why does the calculator round boxes up?
Flooring is normally purchased by complete boxes.
Can I use it for laminate and vinyl flooring?
Yes, when the product provides a square-foot coverage figure per box.
Using this calculator effectively
The flooring calculator finds room area, adds a waste allowance and divides by the coverage per box. It is useful for products such as laminate, vinyl and engineered flooring sold by packaged square-foot coverage.
Common uses
- Estimating boxes of flooring for a rectangular room.
- Comparing package coverage from different flooring products.
- Planning extra material for cuts and future repairs.
Tips for a better estimate
- Measure closets, alcoves and connected areas separately when they are part of the installation.
- Use the exact square-foot coverage printed on the product box.
- Allow more waste for diagonal layouts, patterned material and complex room shapes.
Related calculations
Siding Calculator · Square Footage Calculator · Tile Calculator