What stair width suits a 26in runner
A 26in runner is sized to leave a visible border of bare tread — the 'reveal' — on each side once it is centred and fixed. The comfortable range for that reveal is roughly 2-4.5in (5-11cm) each side; narrower than that and the runner looks jammed against the strings, wider than that and it starts to look lost in the middle of the tread. Working back from that reveal range, a 26in runner suits a staircase that measures 29-34in (74-86cm) stair width between the strings (or between the wall and the baluster on an open side).
| Stair width (strings to strings) | Reveal each side | Verdict |
|---|---|---|
| 25in / 64cm | -0.5in — under 2in | Too tight; runner reads edge-to-edge, no visible frame |
| 29in / 74cm | 1.5in | Minimum comfortable reveal |
| 32in / 80cm | 2.8in | Ideal — balanced reveal |
| 34in / 86cm | 4.0in | Maximum comfortable reveal |
| 38in / 97cm | 6.0in — over 4.5in | Runner looks narrow/lost; step up a size |
Exact reveal maths for your stair
The formula is simple: (stair width − runner width) ÷ 2 = reveal on each side, assuming the runner is centred, which it should be on almost every straight flight. For a 26in runner on a stair measuring, say, 32in between the strings, that's (32 − 26) ÷ 2 = 2.8in of bare tread down each side. Measure the clear width at three points — top, middle and bottom of the flight — because most staircases taper by a few millimetres over their length, and the reveal should be calculated from the narrowest point so the runner never overhangs the tread nosing anywhere.
Measure the narrowest point, not the average
Skirting boards, dado rails and old plaster are rarely perfectly parallel. If your stair width varies between top and bottom, size the runner and its reveal off the tightest measurement — an even reveal that is a little generous at the wide end looks intentional; a reveal that goes negative at the narrow end does not.
Roll widths and metric equivalents
Stair runners are cut from broadloom carpet, so the width you buy is set by the loom width the mill weaves, not by an arbitrary inch measurement. A 26in runner is almost always cut from 66cm (26in) — a common step-up size in mid-range wool and wool-blend ranges. When comparing products between UK, US and European suppliers, always check the centimetre figure — an 'inch' size is often a rounded label over a genuine metric width, and a difference of a centimetre either way changes your reveal by 5mm each side.
| Roll width (cm) | Inches | Matches 26in runner? |
|---|---|---|
| 56cm | 22.0in | No — narrower |
| 61cm | 24.0in | No |
| 66cm | 26.0in | Yes |
| 71cm | 28.0in | No |
| 81cm | 31.9in | No |
| 100cm | 39.4in | No |
| 120cm | 47.2in | No |
Rod and holder width for this runner
Stair rods and holder bars need to clear the runner by roughly 25-40mm (1-1.6in) in total — about the same overhang on each end, excluding any finials. For a 26in runner that means a rod length (before finials) of roughly 27-27.6in (69-70cm). Confirm this against your actual stair width too — the rod must sit clear of the strings, not just clear of the runner, so on a stair near the top of this runner's range the rod length is set by the string gap rather than by the runner edge. Work out exact holder counts and lengths with the stair runner rods calculator.
Where this width looks wrong
- On a stair narrower than about 26in (66cm): the reveal disappears and the runner reads as wall-to-wall carpet rather than a runner.
- On a stair wider than about 38in (97cm): the runner looks like a narrow strip lost in the middle of a wide tread — step up a size.
- On a staircase with a strong taper: a reveal that is correct at the top and negative at the bottom, so the runner appears to run off the tread.
- Where the newel posts are wide and boxy: a narrow runner beside a chunky post looks under-scaled; measure the reveal against the post, not just the string.
- On winders and curved sections: this straight-flight sizing does not apply — winders need bespoke width planning, usually handled with a template.
Worked yardage example: 13-step flight
Take a flight of 13 steps with a 10.5in tread depth and a 7.5in riser height, plus a 4in return onto the landing at the top. The 'going' of carpet needed per step is tread plus riser: 10.5 + 7.5 = 18.0in. Across 13 steps that's 18.0 × 13 = 234.0in, plus the 4in landing allowance, giving a total run of 238.0in (19.83ft, 6.05m).
| Step | Calculation | Result |
|---|---|---|
| Going per step | 10.5in tread + 7.5in riser | 18.0in |
| Total for 13 steps | 18.0in × 13 | 234.0in |
| Landing allowance | Fixed extra at the top | 4in |
| Total run | Sum of the above | 238.0in / 19.83ft |
| Waste and pattern-matching allowance | +10% standard allowance | 1.98ft |
| Order length | Total run + waste, rounded up to the yard | 7.3 yards (6.6m) |
Round up, always
Suppliers cut to the yard or metre, not the inch, and re-ordering a short length rarely matches the original dye lot. Round 7.3 yards up to 8 yards and treat the extra as insurance, not waste — it also covers binding take-up and any pattern repeat on a striped or patterned 26in runner.
26in vs the next size up or down
| Width | Best for | Reveal on a typical 32in stair |
|---|---|---|
| 22in / 56cm | Cottage and older narrow staircases | 5.0in — very generous, borderline lost |
| 24in / 61cm | Standard narrow hall staircases | 4.0in — wide but workable |
| 26in / 66cm | Mid-size semi/terrace staircases | 3.0in — comfortable |
| 28in / 71cm | Wider mid-size staircases | 2.0in — comfortable, tighter |
| 32in / 81cm | Wide detached/new-build staircases | 0in — needs a wider stair |
Fitting and stock notes for this width
26in falls between two much more commonly stocked sizes (24in and 28in), so lead times can be longer and the range of patterns thinner — always check stock availability before committing to a design at this width, and ask whether the supplier weaves it to order rather than holding it as a cut roll. If timing is tight, it's worth comparing the reveal you'd get from 24in or 28in on your actual stair before assuming 26in is the only option.
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 calculatorBuying checklist for this width
- Measure your stair's clear width at top, middle and bottom; use the narrowest figure.
- Confirm 26in gives a reveal in the 2-4.5in range at that narrowest point.
- Check the supplier's exact cm figure against the 66cm standard for this size, not just the inch label.
- Calculate total run length (tread + riser × steps + landing) and add 10% for waste.
- Round the order up to a full yard or metre and confirm dye-lot consistency for the full length.
- Size rods or holders to roughly 27-27.6in, excluding finials, and clear of the strings.
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
What stair width suits a 26in runner?
A 26in (66cm) runner suits a staircase measuring roughly 29-34in (74-86cm) stair width between the strings, giving a reveal of about 1.5-4.0in on each side.
How do I calculate the reveal for a 26in runner?
Subtract the runner width from the stair width and divide by two: (stair width − 26) ÷ 2. Measure the stair at its narrowest point so the reveal never goes negative anywhere along the flight.
What roll width is a 26in stair runner cut from?
Almost always 66cm (26in) — a common step-up size in mid-range wool and wool-blend ranges.
How long a rod do I need for a 26in runner?
Roughly 27-27.6in (69-70cm) excluding finials, provided that length also clears the strings on your actual stair.
Is 66cm the same as 26in?
66cm converts to 26.0in, which is rounded to 26in in most English-language catalogues — close enough that reveal calculations barely change, but confirm the exact figure before ordering if your stair is near the edge of the comfortable range.
When does a 26in runner look wrong?
On a stair narrower than about 26in the reveal disappears and it reads as wall-to-wall carpet; on a stair wider than about 38in it looks like a narrow strip lost on the tread.
How much runner do I need to order for a typical flight?
For a 13-step flight with a 10.5in tread and 7.5in riser, expect a total run of about 19.8ft before waste, and around 7.3 yards once the standard 10% allowance is added — always round up to a full yard.
Should I round my order up or down?
Always round up to the next full yard or metre. A short order rarely matches the original dye lot on re-order, and the extra covers binding take-up and any pattern repeat.
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.
Check my stair widthEvery 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.