Floor Area Calculator

L × W = floor area in ft². For flooring orders, multiply by 1.10 (10% waste).

Inputs

Result

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General calculation reads

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How to use this calculator

  • Enter room L × W.
  • Order including 10% waste buffer.

About this calculator

Same math as square-footage-rectangular but framed for flooring projects. Order 10% extra for waste, cuts, and future repairs. Carpet is sold by yd² (1 yd² = 9 ft²); hardwood, tile, vinyl by ft²; laminate by box.

Frequently asked

How is this different from square-footage-rectangular?+
Same formula. This one shows the "with 10% waste" line for flooring orders.
Tile waste differs?+
Tile: 15% waste typical, 20% for diagonal patterns. Plank flooring: 10%.
Save the cuts?+
Yes — keep ~5% of original order as future-repair stock.
Carpet seam direction?+
Plan seams along walls or under furniture, away from sight lines. Affects required coverage.
Underlayment?+
Calculate separately. Most flooring needs vapor barrier and possibly acoustic underlay.

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