The basic count
Rods sit in the crotch where each tread meets the riser below, so you need one rod for every step the runner covers, not one per tread and riser combined. Count the steps in your flight, decide whether the bottom step gets a rod, and that is your order quantity.
| Steps in flight | Rods (all steps) | Rods (skip bottom step) |
|---|---|---|
| 10 | 10 | 9 |
| 13 | 13 | 12 |
| 16 | 16 | 15 |
| 20 | 20 | 19 |
Why skip the bottom step
Many installers omit the rod on the bottom step or the top landing nosing for a cleaner transition into the hallway floor, especially with a waterfall or Hollywood installation where the runner already flows over that step without a visible break. It is a style choice, not a structural requirement.
Brackets and finials multiply out
| Rods | Brackets needed | Finials needed |
|---|---|---|
| 10 | 20 | 20 |
| 13 | 26 | 26 |
| 16 | 32 | 32 |
Know your numbers in 30 seconds
Enter your step count, tread depth and riser height — the stair runner calculator gives you the exact length to order, in metres and feet, with waste included.
Open the stair runner calculatorWinders and turns need extra thought
On winder or curved stairs the rod on the pie-shaped step may need to be shorter or the step handled differently. Measure each affected step individually rather than assuming a uniform rod length.
Ordering tips
- Buy one spare rod beyond your count in case of a fitting mistake or future breakage.
- Confirm pack sizes; many suppliers sell in 10s, 12s or 13s rather than singles.
- Order rods, brackets and finials from the same range so finishes match exactly.
- Recheck your step count on site; drawings and site reality sometimes differ by one step.
Buying checklist with price bands
Once you know your rod count, budget for the full set, not just the rods, since brackets and finials typically add 30 to 50 percent to the total hardware cost.
| Flight size | Rods only (US) | Full set incl. brackets/finials (US) | Full set (UK) |
|---|---|---|---|
| 10 steps | $100-$250 | $160-$400 | £120-£300 |
| 13 steps | $130-$330 | $210-$520 | £155-£390 |
| 16 steps | $160-$400 | $260-$640 | £190-£480 |
- Get quotes as a complete per-step set price to compare suppliers fairly.
- Factor in one spare rod and a spare bracket pair for future repairs.
- Ask if finials are interchangeable separately if you want to update the look later without replacing rods.
Common specification mistakes
Buyers commonly miscount steps by confusing the number of treads with the number of risers, or by forgetting that a half-landing or winder section changes the count partway up the flight, leading to an order that is short by one or two rods.
| Mistake | Result |
|---|---|
| Counting risers instead of treads | Order is off by one rod |
| Not accounting for a half-landing break | Rod pattern does not resume correctly above the landing |
| Ignoring winder steps in the count | Missing rods or wrong lengths for angled treads |
Whatever you decide, get the numbers first: the stair runner calculator doubles as a stair runner length calculator, adding nosing wrap, landings, winders, pattern repeat and waste so you order the right length the first time.
Frequently asked questions
How many stair rods for 13 steps?
Thirteen rods if every step gets one, or twelve if you skip the bottom step for a cleaner finish into the hallway. Each rod also needs two brackets and typically two finials.
Do I need a rod on every step?
Not necessarily. Most flights work well with one rod per step, but many installers omit the bottom step or top nosing for a smoother visual transition, especially with waterfall-style installations.
How many brackets come with a stair rod?
Two brackets per rod, one at each end, is standard. A 13-rod flight therefore needs 26 brackets in total, usually sold separately from the rods themselves.
Should winder steps get a stair rod too?
Usually yes, but measure each winder step individually since the rod length and bracket position will differ from the straight steps above and below it.
Do half-landing stairs need extra stair rods?
The rod count still follows one rod per tread on each flight either side of the half-landing; the landing itself does not usually take a rod. Measure each flight separately and confirm whether the landing carpet is treated as a continuation or a separate join.
Know your numbers in 30 seconds
Enter your step count, tread depth and riser height — the stair runner calculator gives you the exact length to order, in metres and feet, with waste included.
Work out how many rods I needEvery guide is written from hands-on measuring and fitting experience, checked against the calculator’s own maths, and re-reviewed whenever prices or methods change. Read our editorial standards.