FullCalculator

Stair Carpet Calculator

Stair Carpet

Calculate carpet for a straight staircase

in
in
in
in

Formula

Total Length = NumSteps × (TreadDepth + RiserHeight + Nosing + TuckAllowance); Area = TotalLength × Width

Frequently Asked Questions

How much carpet do I need for stairs?
For each step, add the tread depth plus the riser height plus 1-2 inches for tucking. Multiply by the number of steps to get total length. Then multiply by stair width for total area.
What is the difference between waterfall and Hollywood carpet installation?
Waterfall installation drapes the carpet smoothly over the nosing and down the riser. Hollywood installation tucks the carpet under the nosing for a more fitted look that shows the step profile.

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