Stair Runner Length CalculatorMaterial
Wool stair runner length calculator
Wool is the traditional stair runner material: resilient, forgiving underfoot, and flexible enough for a tailored Hollywood fit.
Because it bends well, wool runners usually take a nosing allowance of 1 to 1.5 in per step, and because many wool runners are patterned, they usually need 10 to 15% waste.
Stair runner calculator
Your stair runner length
20 ft 3.1 in
Total runner required for 13 steps, including a 10% waste allowance.
| Inches | 243.1 in |
|---|---|
| Feet | 20.26 ft |
| Feet & inches | 20 ft 3.1 in |
| Yards | 6.75 yd |
| Meters | 6.17 m |
| Centimeters | 617.47 cm |
Recommended purchase length
21 ft
7 yd · 6.4 m · 252 in
This calculator provides an estimate based on the measurements and installation assumptions you enter. Complex, curved or winder staircases may require professional measurement.
Your measurements, drawn to scale
Pattern repeat on wool stripes
Classic wool stair runners are striped along the length, which matches easily. Cross-stripes and repeats need every tread aligned — ask for the repeat measurement and add it to your waste thinking.
Wool and rods
Wool compresses under a stair rod without permanent damage, which is why rods and wool are such a common pairing. Count one rod and two brackets per step in the materials list.
Longevity and pile direction
Fit with the pile running down the flight. Fitted the wrong way, wool shades differently on every tread and wears faster on the nosings.
Questions people ask
- How much waste for a patterned wool runner?
- 10% for simple stripes, 15% or more where a repeat must land in the same place on every tread.
- Is wool suitable for Hollywood installation?
- Yes — wool is flexible enough to wrap tightly into the riser corner, so include a nosing allowance of 1 to 1.5 in per step.