Carpet Calculator Widget | Calculator Campus

Add each room to get floor coverage. Open roll details for a broadloom estimate, or switch to straight stairs for continuous run and coverage.

Rooms or rectangular sections

Length Length unit Width Width unit Identical rooms

Number of identical steps (required)

Tread depth (required)

Riser height (required)

Stair width (required)

Measured nose or wrap allowance per step

Stair measurement unit

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Carpet roll width (required)

Roll direction (required)

Trim at each wall

Trim unit

Pattern repeat along the roll

Additional allowance (%)

Carpet price

Padding price

Landing length

Landing width

Landing unit

Floor coverage

150 sq ft (16.67 sq yd; 13.94 m²)

Square yards 16.67 sq yd

Square meters 13.94 m²

Estimated broadloom purchase area 186 sq ft (20.67 sq yd; 17.28 m²)

Estimated roll offcut 36 sq ft (4 sq yd; 3.34 m²) (24%)

Padding coverage 150 sq ft (16.67 sq yd; 13.94 m²)

Coverage-based material subtotal —

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How the estimate was calculated

Full-width drops 1

Calculation details Each room uses full-width parallel drops from the 12 ft (3.66 m) entered roll width, with 0% additional allowance after trim and pattern-repeat planning. Selected layout: Room 1: along room length.

Check before ordering The lower mathematical layout may conflict with pile direction, doors, light, traffic, or seam placement. Roll offcut is a geometry estimate. Do not assume it can be reused without a seam-aware cut plan.