Stair Stringer Calculator

Lay out rise, run, and stringer length to code.

Total rise (in)Total run (in)Desired riser (in)Desired tread (in)

Result

Risers

Treads

Actual rise (in)

7.71

Actual tread (in)

Total run (in)

143

Stringer length (ft)

14.93

Code rise

Code tread

About this tool

Apply IRC 2024 7-3/4-inch rise and 10-inch run minima, count risers and treads, output stringer length and cut dimensions.

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