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Stair Calculator
Calculate stair dimensions including rise, run, and number of steps. Ensures compliance with building code requirements.
Cubic Feet
33.33 cu ft
Cubic Yards
1.23 cu yd
80-lb Bags
47 bags
60-lb Bags
62 bags
How to Use the Stair Calculator
Enter your values above for an instant result. This tool uses verified formulas and is optimised for users in USA, Canada, UK, Australia. All calculations happen in your browser — your data is never sent to our servers.
Frequently Asked Questions
What is the ideal step rise and run?
Building codes typically require 7–7.75 inch rise and 10–11 inch run. The rule: 2× rise + run = 24–25 inches.