Stair dimensions
Enter your measurements — diagram updates live as you type
IRC R311.7
pass
fail
handrail
Diagram scales with your measurements — enter values below
Step geometry
Vertical height of one step
Horizontal depth of one step
Clearances & width
Vertical from nosing to ceiling
Clear width between walls or rails
Handrail
Measured vertically from nosing
🚚 Building or remodeling stairs?
⚠ Codes reference IRC 2021 R311.7 & R311.8. Always verify with your local AHJ before construction. Handrail is required when a stairway has 4 or more risers (IRC R311.7.8).
More tools