Stair Carpet Calculator
Estimate carpet runner length, required strip width, full rolls and material cost for a straight stair flight with optional landing coverage.
Default project preview
1 rolls
Base stair run
24 ft
Carpet area needed
92.2 ft²
Strips from roll width
3
Runner segments
1
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Runner length = steps × (tread depth + riser height) + landing length. Allowance is added, cut width is compared with roll width, and the result is rounded to full entered rolls.
FAQ
Stair Carpet Calculator questions
Why are tread and riser dimensions both included?+
Continuous stair carpet normally covers the horizontal tread and vertical riser for every step.
What is the side trim allowance?+
It adds cutting width beyond the visible finished width so edges can be trimmed or turned according to the installation method.
Does this include carpet pad?+
No. Pad, tack strip, nosing details, fasteners and labor should be estimated separately.