Stair Measurement Calculator
Calculate stair dimensions, riser height, tread depth, and total run. Perfect for DIY projects, construction planning, and building code compliance.
Step 1: Stair Dimensions
Building Code Guidelines
Most building codes require riser heights between 6-8 inches and tread depths of at least 10 inches. The ideal relationship is 2×Riser + Tread = 24-25 inches.
Step 2: Calculation Preferences
Stair Measurement Formulas
Number of Steps = Total Rise ÷ Riser Height. Tread Depth = Total Run ÷ (Number of Steps – 1). Optimal comfort is achieved when riser × tread = 72-75 inches.
Stair Calculation Results
Recommended Stair Configuration
Stair Type Comparison
| Stair Type | Min. Width | Max. Riser | Min. Tread | Space Required |
|---|
Stair Dimension Visualization
Stair Calculation Formula
Steps = Total Rise ÷ Riser Height | Tread = Total Run ÷ (Steps – 1)
The optimal stair dimensions follow the formula: 2×Riser + Tread = 24-25 inches. Building codes typically limit riser height to 7.75 inches and require minimum tread depth of 10 inches.
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