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Flooring Calculator

Enter your room area to find how much flooring you need in square feet and boxes, including a waste allowance for cuts. Order 10% extra for straight planks and 15% for diagonal layouts.

You need approximately
8 boxes
covers 158.4 ft² (incl. waste)
Area to cover
158.4 ft²
Exact amount
7.92 boxes

Field notes

Add 10% for straight-lay planks and 15% for diagonals, long boards, or a room with lots of jogs — offcuts pile up fast. Buy it all in one lot and let it acclimate in the room for a few days before installing, or seasonal movement opens gaps. Keep a spare unopened box; matching a discontinued run years later is nearly impossible.

How the flooring calculator works

The math behind the tool:

flooring ft² = room area × (1 + waste%)
boxes = flooring ÷ box coverage

Sources: National Wood Flooring Association (flooring waste factors and acclimation).

Frequently asked questions

How much flooring do I need?

Measure the room length × width for square footage, add 10% for waste, then divide by the coverage printed on each box. A 200 ft² room needs about 220 ft² of flooring.

How much waste should I add for flooring?

Add 10% for straight-lay planks in a simple rectangular room, and 15% for diagonal patterns, angled rooms, or long boards that produce more offcuts.

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