Stair Calculator
Calculate stair dimensions: risers, treads, and angle. Free, instant.
How to Use Stair Calculator
1
Enter total height to climb in inches.
2
Enter desired riser height.
3
Get number of risers needed.
Frequently Asked Questions
What is the ideal riser height?
Building codes typically require 7–7.75 inches. 7.5" is a common standard.