Stair Layout
Designing safe stairs requires balancing the rise (height) and run (depth) of each step. A common rule is that the sum of one rise and one run should be between 17 and 18 inches.
Stringer² = Total Rise² + Total Run²
Last updated: April 13, 2026
Stair Calculator
Based on 3 sources
100 people find this calculator helpful
Table of contents
in
in
Did we solve your problem today?