Stair Calculator

Calculate stair rise, run, angle, and stringer length for your construction project. Ensure your stairs meet building codes with our professional calculator.

Input Parameters

Units

Imperial (inches) Metric (cm)

Total Rise * (vertical height from ground to platform)

Calculation Mode

Use Total Run Use Number of Steps

Total Run (horizontal distance)

Results

Enter parameters and click "Calculate Stairs" to see results

Frequently Asked Questions

Important Disclaimer

This calculator is for informational purposes only. Always consult with a professional architect, engineer, or contractor before construction. Building codes vary by location - check your local requirements. The results should not be considered as professional engineering advice.