Use 10 percent waste for simple rooms and 15 percent or more for diagonal layouts or many cuts.
Floors
Flooring Calculator
Plan laminate, vinyl plank, hardwood, or carpet quantities with a waste factor and box coverage.
Example estimate ready.Change the measurements and product prices below. Values save only on this device.
Calculation method
How the estimate is built.
Room area and added closet or hall area form the base measurement. Waste is added, then the purchase quantity rounds up to full boxes so both the square footage and cost reflect what you actually buy.
Field notes
Use the estimate well.
Keep one unopened extra box when possible for future repairs.
Measure closets, transitions, and under appliances if the finished floor continues there.
FAQ
Flooring questions
How much extra flooring should I buy?
A 10 percent waste factor works for many square rooms. Complex layouts, stairs, angled walls, and patterned installation usually need more.
Why does box coverage matter?
Flooring is sold by the box, not by exact square foot. The calculator rounds up so you do not come up short.
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