Installation style

Hollywood stair runner length calculator

Hollywood — sometimes called cap and band or upholstered style — contours the runner tightly around every nosing and into every corner. It is the more tailored, more expensive-looking finish.

It also needs more material: budget an extra 1 to 2 inches per step over a waterfall fit.

Stair runner calculator

Your staircase

Start from typical stair sizes where you live

IRC-style stairs: 10 in minimum tread, 7¾ in maximum riser. Runners are usually 27 in or 32 in wide and sold by the linear foot.

Count every step you will cover.

Front edge to back of the step. Fractions like 10 1/2 work.

The vertical face between two treads.

%

10% is a common starting point; pattern matching and winders need more.

Needed when the runner wraps around a projecting nose (Hollywood installs and thick pads). Waterfall installs usually don't need it.

Your stair runner length

20 ft 3.1 in

Total runner required for 13 steps, including a 10% waste allowance.

Total runner length in each unit
Inches243.1 in
Feet20.26 ft
Feet & inches20 ft 3.1 in
Yards6.75 yd
Meters6.17 m
Centimeters617.47 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

Tread 10"Riser 7"Runner pathRunner length per step = tread + riser = 17"
Side elevation of a staircase. The runner travels across each tread and down each riser, so every step consumes tread depth plus riser height of material.

Length for Hollywood style

Steps × (tread + riser + nosing wrap). With a 1.5 in wrap on a 15 step flight that is 22.5 in more than the bare figure — the calculator's nosing allowance field is exactly this number.

Fitting requirements

Hollywood needs a runner that will bend cleanly, a good underlay and a stair tool. It takes longer to fit, so labour rates are usually higher per step.

Best with patterned runners

Because the runner hugs the profile, patterns read continuously up the flight rather than breaking at each nosing. Add 15% waste if the pattern must line up on every tread.

Questions people ask

How much more runner does Hollywood style need?
Roughly 1 to 2 inches per step, which is 15 to 30 inches on a typical flight.
What is cap and band?
Another name for Hollywood installation — the runner is wrapped tightly over the tread nosing and into the riser corner for a tailored, upholstered look.

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