Stair Calculator

Design your perfect staircase by entering the measurements below. This calculator ensures your stairs meet standard building codes while providing optimal comfort and safety.

Basic Measurements

Total Rise
Available Run

Advanced Options

Tread Depth
Nosing

Understanding Stair Design & Building Codes

Key Building Code Requirements:

  • Maximum riser height: 7.75 inches (19.7 cm)
  • Minimum tread depth: 10 inches (25.4 cm)
  • Minimum stair width: 36 inches (91.4 cm)
  • Minimum headroom: 6'8" (203.2 cm)
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