Measure Stair Tread Width

What happens here

Start by measuring the entire width of your stair tread. This measurement typically goes from a spindle to the wall, or simply wall-to-wall if there are no spindles. For example, if the full width is 43 inches. Next, decide how much exposed wood you want to see on either side of the carpet stair tread. The recommendation is 2 to 4 inches per side. If you choose 4 inches per side, that's a total of 8 inches (4 inches + 4 inches). Subtract this total from the full stair width (e.g., 43 - 8 = 35 inches). This final number is the ideal width for your carpet stair tread.

Goal: Measure the total width of your stair tread and then calculate the desired carpet tread width by subtracting the amount of exposed wood you want on each side.