Stair Carpet Calculator: Area, Rolls and Cost Estimator

Your details

Count each individual step (riser + tread pair) in the flight.
steps
The horizontal run of a single step, measured from nose to riser.
in
The vertical height of each step riser. Enter 0 for open-riser stairs.
in
The usable width of the staircase from wall to wall (or baluster to baluster).
in
How far the tread nose projects beyond the riser below it. Use 0 if flush.
in
Depth of any landing at the top or bottom of the flight. Leave at 0 if none.
in
Extra carpet to order for cutting, pattern matching and offcuts. 10% is standard.
%
Leave at 0 to skip cost estimate. Enter the price per square foot or square metre.
sq ft
Total carpet area
67.93sq ft

Gross carpet area including waste allowance

Area in square yards7.55sq yd
Area in square metres6.31sq m
Linear length needed22.64ft
Carpet length per step1.583
Net carpet area (sq ft)61.75
Net area (sq ft)61.75
With waste allowance (sq ft)67.93

You need 67.9 sq ft of carpet for your staircase.

  • You need approximately 67.93 sq ft (7.55 sq yd) of carpet for 13 steps, including your 10% waste allowance.
  • The net (no-waste) area is 61.75 sq ft and the waste buffer adds 6.18 sq ft. Increase the waste allowance to 15% for patterned carpets that need pattern matching.
  • Total linear carpet run (including waste) is 22.64 ft. Carpet rolls are typically 12 ft or 15 ft wide - you can often cut a single width to cover the stair width with minimal joins.

Next stepEnter a price per square unit to add a cost estimate. Get quotes from at least three suppliers and compare total installed cost, not just carpet price per yard.

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