Construction

Carpet Calculator

Estimate carpet area in square yards and its cost.

Room length

Room width

Waste (%)

Price per yd² ($)

Calculated Output

Carpet needed (yd²) 22

Carpet needed 198

Total cost ($) 0

Formula: yd² = length × width ÷ 9 × (1 + waste)

Step-by-Step Breakdown

1. Values used:

2. Room length = 15

3. Room width = 12

4. Waste = 10 %

5. Price per yd² = 0 $

7. Carpet needed = 22yd²

8. Carpet needed = 198

9. Total cost = 0$

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The math behind it

Area (ft²) = length × width, plus waste for seams and trimming.

Square yards = ft² ÷ 9.

15×12 ft room = 180 ft²; with 10% waste = 198 ft² ÷ 9 = 22 yd².

Why add waste for carpet?

Carpet comes in fixed roll widths (often 12 ft), so seams and trimming create offcuts.