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Stair Flooring Area Calculator

Calculate stair tread, riser, and landing surface area for a wood stair project.

Inputs

Project inputs

Range: 1–100

Count the horizontal tread surfaces that will receive flooring.

Range: 0–100

Count the vertical riser surfaces that will receive flooring; this may differ from tread count at landings or open stairs.

Range: 1–8 ft

Range: 0.5–2 ft

Measure the finished horizontal depth to be covered, including any nosing that is part of the flooring piece.

Range: 0.3–1.5 ft

Range: 0–500 ft2

Result

Landing area
0.00 ft2
Riser area
25.35 ft2
Total stair flooring area
63.38 ft2
Tread area
38.03 ft2

How this is calculated

Tread area
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