Stair Runner Calculator
Calculate the perfect stair runner size for your staircase. Get accurate width and length measurements including proper overhang for professional installation.
Stair Runner Calculator
Standard: 7-7.5 inches
Standard: 10-11 inches
Standard Stair Dimensions:
- • Rise: 7-7.5 inches (vertical)
- • Run: 10-11 inches (horizontal)
- • Runner width: 4-6" narrower than stair width
- • Standard runner widths: 27", 30", 36"
Stair Runner Sizing Guide
Runner Width
- • Standard widths: 27", 30", 36"
- • Leave 4-6" margin on each side
- • For 36" stairs: Use 27" or 30" runner
- • For 42" stairs: Use 30" or 36" runner
- • For 48" stairs: Use 36" runner
Runner Length
- • Measure diagonal length of stairs
- • Add 12" overhang at top
- • Add 12" overhang at bottom
- • Add 1 foot extra for safety
- • Round up to nearest foot
Standard Stair Dimensions
- • Rise: 7-7.5 inches (vertical)
- • Run: 10-11 inches (horizontal)
- • Stair width: 36-48 inches
- • Total rise: Rise × number of steps
- • Total run: Run × number of steps
Installation Tips
- • Use stair rods or padding for secure installation
- • Ensure runner is centered on stairs
- • Allow proper overhang at top and bottom
- • Consider pattern matching if using patterned runner
- • Buy extra length for pattern matching
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