Stair Calculator

Floor-to-floor height

Preferred step height

Tread depth

For stringer count

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Design stairs from total rise. Computes step count, actual rise/run, stringer length, code compliance check (rise 4-7.75in, run 10-11in). Stringer boards and treads estimated.

How to Use

  1. 1Enter the total rise (floor-to-floor height in inches or cm)
  2. 2Enter your preferred riser height (default 7 inches) and tread depth (default 11 inches)
  3. 3Click Calculate to see step count, actual rise and run, total run, and stringer length
  4. 4Building code compliance is checked: rise 4–7.75 in, run 10–11 in
  5. 5Enter staircase width to get the number of stringer boards and treads needed

Features

  • Total rise to step count, rise, run, stringer length
  • Building code compliance check (rise 4–7.75 in, run 10–11 in)
  • Comfort rule verification (rise + run = 17–18 in)
  • Stringer boards and tread count from staircase width
  • Inches/feet and mm/cm support
  • 100% browser-based

Frequently Asked Questions

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