Flooring Calculator

Calculate how much flooring material you need for any room. Enter room dimensions, select your flooring type, and get square footage, number of boxes, and total cost estimate including a waste factor.

Room Flooring Calculator

Flooring Calculation Formula

Room Area = length × width With Waste = Room Area × (1 + waste% / 100) Boxes = ceil(With Waste / sq ft per box) Cost = Boxes × price per box

Recommended Waste Factors

Installation TypeWaste Factor
Straight lay (parallel to walls)5–7%
Standard installation10%
Diagonal (45°) installation15%
Herringbone / complex patterns15–20%
Small or irregular rooms15–20%

Frequently Asked Questions

Why do I need a waste factor?+
Waste accounts for cuts at walls, doorways, and obstacles; material lost to mistakes; and the need to match patterns. Always order 10–15% more than your exact measurements to avoid running short.
How many sq ft are in a standard box of flooring?+
Box coverage varies by product. Laminate and engineered hardwood boxes typically cover 15–25 sq ft. Tile boxes vary widely — from 10 sq ft to 40+ sq ft. Always check your product's label for exact coverage.

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