Flooring Calculator

Estimate flooring square footage, waste percentage, and number of boxes needed. If you only need basic area, use our Floor Area Calculator.

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Flooring Needed: —
Formula:
Area = Length × Width
Adjusted Area = Area × (1 + Waste%)
Boxes Needed = Adjusted Area ÷ Coverage per Box
Example:
20 × 15 = 300 ft²
10% waste → 330 ft²
330 ÷ 25 = 13.2 → 14 boxes
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Frequently Asked Questions

How much waste should I add?

Most flooring projects add 5–15% waste depending on layout and cuts.

Why are boxes rounded up?

You must purchase whole boxes, so results round up automatically.

What if my room is irregular?

Break the space into rectangles and add areas together.