Flooring & Carpet

Carpet Calculator

Estimate carpet area, roll length, seams and layout waste, padding and tack strips, and total installation cost with this flexible carpet calculator.

Room & Multi-Room Coverage Roll Layout & Seams Padding & Project Cost

Carpet Area, Roll Length, Padding & Cost Estimator

Calculation Mode

Length Units Main field = feet or meters, extra field = inches or centimeters.

Carpet Roll Width Select a common carpet roll width or switch to custom dimensions.

Custom Roll Width

Width of the carpet roll in feet or meters.

Standard Roll Length (optional) Maximum usable roll length in current units (ft or m). Used to estimate the number of rolls.

Room Length

Measure the longest usable dimension of the room.

Room Width

Measure the widest usable dimension of the room.

Waste / Overage Factor (%) Extra carpet for seams, trimming, pattern matching and mistakes.

Room 1 (Length & Width)

Room 2 (Length & Width)

Room 3 (Length & Width)

Room 4 (Length & Width)

Room 5 (Length & Width)

Overall Waste / Overage Factor (%)

Room Length (roll direction)

The carpet roll is assumed to run along this direction.

Room Width (across roll widths)

Carpet widths are laid side by side across this dimension.

Extra Layout Waste (%) Additional allowance for pattern matching, trimming and layout constraints.

Minimum Usable Offcut Length (ft) Offcuts shorter than this are treated as waste in the layout summary.

Total Carpet Area Use single or multi-room modes first if you need to estimate this area.

Padding Coverage per Roll (sq ft)

Total Perimeter Length

Approximate perimeter of all carpeted areas for tack strips and baseboard.

Number of Doorways / Transitions Used to estimate transition strips and threshold pieces.

Number of Carpeted Stairs (optional) Quick estimate of extra area and accessories needed for straight stair runs.

Total Carpet Area You can copy this from the single or multi-room carpet calculator outputs.

Carpet Price per Sq Ft ($) If you only know price per linear foot, you can leave this at 0 and use the next field.

Carpet Price per Linear Foot ($) Based on your selected roll width. The carpet calculator converts this to price per sq ft automatically.

Padding Cost per Sq Ft ($)

Other Material Costs ($) Thresholds, tack strips, adhesives, trim and contingency.

Labor Cost per Sq Ft ($)

Waste / Overage Factor (%)

Tax Rate (%)