Stair Calculator

Calculate stair dimensions including rise, run, angle, and stringer length. Verify building code compliance for IRC, IBC, and OSHA standards.

IRC/IBCConstructionCode Compliance
Stair Calculator
Enter dimensions to calculate stair rise, run, and check building code compliance

Calculation Mode

Choose how to calculate stair dimensions

Building code standard to follow

Dimensions

Total vertical height from floor to floor

Preferred height per step (leave empty for optimal)

Width of the staircase

Include tread nosing in measurements