Free tool
Stair stringer calculator
Riser, tread, steps, and stringer cuts from your total rise + run.
Steps5
Riser (each)7 1/4 in
Tread (each)10 1/2 in
Stringer length4 ft 7 3/8 in
Enter the total rise (floor to floor) and the total run. Mark each step riser-up × tread-over; aim for 7–7¾″ risers and ≥10″ treads (typical code).
Tired of doing the math by hand?
Text the job to Booxt and it prices the whole estimate — phase by phase, in your numbers — in about 90 seconds, then emails it to your customer to sign.
Text it — see it workFree, no signup — text (329) 888-5488. Or start the free week — flat $99/mo.
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