Measure the height, or "rise," of the space you want to make stairs.. Subtract 6–7 feet (1.8–2.1 m) from the total rise to account for headroom.. Divide the rise by 6 or 7 inches (15 or 18 cm) to find the total number of stairs.
Measure the height, or "rise," of the space you want to make stairs.
Subtract 6–7 feet (1.8–2.1 m) from the total rise to account for headroom.
Divide the rise by 6 or 7 inches (15 or 18 cm) to find the total number of stairs.
Divide the rise by the number of stairs to find the individual stair rise.
Plan for the individual "run" of each step to be 9–10 inches (23–25 cm).
Find the total run by multiplying the individual run by the number of steps.
Plan for the width of each stair to be 36 inches (91 cm).
Calculate your staircase's stringer length.
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