Counting stair rods and brackets

If you want decorative stair rods, count them separately from the runner and include them in the quote. The calculator counts them for you alongside the length.

The standard assumption is one rod per step with two brackets each, and a rod length of the runner width plus about 4 inches so the finials sit clear of the edges.

Your staircase

Optional starting measurements

Example measurements only, not building-code advice. Replace them with measurements from your own stairs.

Check a few steps before using one set of measurements for the whole flight.

Number of stairs

Count the tread-and-riser pairs the runner will cover. Exclude landings.

Tread depth (in)

Measure the runner path across the flat tread. Fractions like 10 1/2 work.

Riser height (in)

The vertical face between two treads.

Waste allowance

Custom%

10% is the starting allowance here, not a guarantee. Ask your fitter about patterns and turns.

Add a nosing / overhang allowance per step

Enter the extra runner path around the edge, including any underside wrap. Do not add it twice if it is already included in your measurements.

Your runner estimate

20 ft 3.1 in

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

Total runner length in each unit
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

Length to order

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.

One step, shown in profile

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.

How many rods do I need?

One per riser. A 14 step flight takes 14 rods and 28 brackets. Landings do not take rods. If you are using rods decoratively on alternate steps only, halve the count.

Rod length

Add roughly 4 in to your runner width. A 27 in runner takes a 31 in rod; a 70 cm runner takes about an 80 cm rod. Rods are usually cuttable, but finials are not.

Decorative or functional?

Modern rods are almost always decorative — the runner is held by tackless strip and staples underneath. That matters because a purely decorative rod does not need to be structural, but it does need to sit tight against the riser corner.

Questions people ask

How many stair rods for 13 stairs?: Thirteen rods and twenty-six brackets — one rod per riser, two brackets per rod.
How long should stair rods be?: About 4 inches longer than the runner width, so a 27 in runner needs a rod of roughly 31 inches.

Related guides

See all stair runner calculator guides