Stair Calculator
Total rise (finished floor to finished floor)
inches
cm
mm
Measure the real height, including flooring on both levels.
Target riser height
inches
cm
mm
7 to 7.5 in is comfortable.
Tread depth (run per step)
inches
cm
mm
10 in minimum in most residential code.
Stair width
inches
cm
mm
Does the top step land on the upper floor?
Yes — upper floor is the last step
No — there is a tread at the top
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