Staircase Carpet Calculator

Calculate carpet needed for stairs including treads and risers.

Number of Steps

Tread Depth (in)

Riser Height (in)

Stair Width (in)

Formula

Carpet Length = (Tread + Riser + 2 in) / 12 x Steps

How much extra carpet should I buy for stairs?

Add 10% to 15% extra for waste, cuts, and alignment.

Can I carpet stairs myself?

Yes, but professional install is recommended for safety.