How to Calculate Yardage for 118-Inch Upholstery Fabric

118-inch fabric (also called "double-width" or "extra-wide") uses a completely different calculation logic than standard 54-inch fabric. The panels don't cut the same way, the yardage numbers are dramatically lower, and the same formulas that work for 54-inch fabric will produce completely wrong numbers if applied to 118-inch.

118-inch fabric is common in performance fabrics, commercial upholstery, some outdoor applications, and certain decorative wovens used for large-scale projects. You'll also see it in railroaded fabrics, which may run at 118 inches or other extra-wide dimensions. If you're working with this width, the standard residential yardage estimates don't apply.

TL;DR

Fabric Width 118 Inch yardage depends on fabric width, construction details, pattern repeat, and nap direction.
Plain 54-inch fabric requires a baseline calculation plus 10-15% waste allowance for a standard fabric width 118 inch job.
Patterned fabric adds 20-35% to base yardage depending on repeat size and the number of cutting zones that must align.
Directional fabrics add 15-25% over plain fabric because layout optimization is restricted by nap direction.
Always verify fabric width before finalizing yardage; COM fabric often comes in non-standard widths.
Calculating yardage at the quote stage, not mid-job, eliminates reorders and protects your profit margin.

Why 118-Inch Fabric Cuts Differently

At 54 inches wide, you're cutting panels oriented with the length of the panel running along the bolt length. The bolt unrolls and you cut across the width to get your panel.

At 118 inches wide, many panels can be cut in a single row across the width. An inside back panel that's 36 inches wide cuts across a 118-inch bolt with 82 inches of width remaining — room for outside arms, front border, and welt strips all in the same row.

This is why 118-inch fabric for a standard sofa might require only 5–7 yards instead of 14–18 yards. You're cutting across the width of the bolt for most panels, not cutting multiple rows of panels up the bolt length.

Railroaded vs. Up-the-Roll

This distinction matters more with 118-inch fabric than with any other width.

Up-the-roll fabric: The pattern runs along the bolt length. Stripes run vertically (up the bolt). To get a panel with the pattern oriented correctly, you cut sections off the bolt length. With 118-inch up-the-roll fabric, a sofa inside back might cut from a 24-inch section of bolt length, giving you a 118-inch wide × 24-inch long panel from which you cut your inside back.

Railroaded fabric: The pattern is intentionally rotated 90 degrees so stripes or horizontal designs run along the bolt length rather than across it. This means on a wide bolt, a sofa back that's 36 inches wide can be cut from a single 36-inch section of the bolt length without pattern interruption — no seams needed on the inside back for a sofa up to 118 inches wide.

Railroading is specifically designed for upholstery. When used with 118-inch fabric, it dramatically reduces seaming on large pieces and can eliminate pattern interruption entirely on sofa backs, sectional pieces, and wide commercial pieces.

Calculating Yardage for 118-Inch Fabric

The calculation approach inverts from standard 54-inch logic:

Lay out panels across the 118-inch width rather than down the bolt length.
Determine which panels fit across the width in a single "row" (oriented for cutting across the bolt).
Sum the maximum panel heights across your layout to determine how much bolt length you need.

For an 84-inch 3-cushion sofa:

Inside back (36"W x 24"H) and outside back (36"W x 24"H): Both fit side by side at 72 inches across a 118-inch bolt. Row height: 24 inches.
Left and right inside arms (24"W x 22"H each) + both outside arms (24"W x 14"H each): 96 inches total across, fits within 118 inches. Row height: 22 inches (taller panels).
Seat cushion faces (3 x 24"W x 24"H): 72 inches total across, fits within 118 inches. Row height: 24 inches.
Cushion boxing, front border, deck, welt strips: fit in remaining spaces.

Total bolt length needed: approximately 24 + 22 + 24 = 70 inches = approximately 2 yards for the main panels. Add welt and smaller pieces: approximately 0.5 yards. Total: 2.5 yards.

Compare to 54-inch: 8 yards for the same sofa. The savings are dramatic because you're cutting most panels in a single wide row instead of multiple narrow rows.

Pattern Repeat on 118-Inch Fabric

Pattern repeat calculations work differently on railroaded vs. up-the-roll wide fabric.

Railroaded 118-inch fabric with horizontal repeat: The repeat runs along the bolt length (which is now the design length). Pattern alignment happens left-to-right across the bolt width. On a sofa, if the inside back is at the center of the bolt width and the seat is at the front of the layout, horizontal alignment is handled in the cutting plan width rather than the bolt length.

Up-the-roll 118-inch fabric with vertical repeat: The repeat runs down the bolt as normal, but because you're cutting short sections of bolt length for each wide panel, you're using very little bolt length per panel. A 27-inch vertical repeat on a 24-inch-tall inside back panel means you need one full 27-inch section of bolt length for that panel — using 27 inches of bolt, not 24 inches. That 3-inch waste per panel exists, but since you're only using 2–3 yards of bolt length total, the absolute waste in yards is still much less than the same repeat on 54-inch fabric.

Commercial Upholstery Applications

118-inch fabric is standard for many commercial upholstery applications: restaurant booth seating, theater and cinema seating, stadium seating, commercial banquettes, and large-format corporate lounge furniture.

For a 120-inch restaurant banquette with a simple back cushion:

At 54 inches, the inside back requires at least 3 seams to span 120 inches (three 40-inch panels at 54-inch width).
At 118 inches, the inside back is a single panel cut from a short bolt section — approximately 24 inches of bolt length covers the full 118-inch width.

That eliminates 2 seams per banquette section, which is significant in commercial installations where durability and appearance over time matter.

Mistakes When Calculating 118-Inch Fabric

Applying 54-inch yardage formulas directly. Never do this. The calculation approach is completely different because you're using bolt width, not bolt length, as your primary cutting dimension.

Forgetting railroaded fabric has no "vertical" repeat in the traditional sense. Railroaded patterns have their repeat on the horizontal axis (across the bolt width). Your pattern alignment math changes accordingly.

Not verifying the actual width. "118-inch" is a category, not a guarantee. Check the actual bolt width — it may be 117, 119, or 120 inches depending on the manufacturer. Use the measured width.

FAQ

How many yards of 118-inch fabric do I need for a sofa?

A standard 84-inch 3-cushion sofa requires approximately 2.5–4 yards of 118-inch fabric, compared to 8 yards of 54-inch fabric. The dramatic reduction is because most sofa panels cut across the 118-inch width in a single wide row, using only a short length of bolt per panel. Add proportional waste for pattern repeats — these are smaller in absolute terms because you're using less bolt length overall.

What is railroaded fabric and why does width matter?

Railroaded fabric has its design pattern running horizontally across the bolt (perpendicular to how it unrolls) rather than vertically. This is intentional for upholstery: it allows wide backs and long horizontal seating surfaces to be cut from a short bolt section without interrupting the pattern with a seam. At 118 inches wide, a railroaded fabric can cover the inside back of almost any residential sofa with a single panel from a very short bolt length — typically 24–30 inches of bolt for a standard sofa back.

Should I use 118-inch fabric for residential upholstery?

It depends on the piece. For most residential upholstery, standard 54-inch fabric is more practical — wider selection, easier to source, standard pricing. 118-inch fabric makes the most sense for very wide pieces (large sectionals, oversized sofas, custom built-ins) where 54-inch fabric would require seams on the inside back and seat panels. It's also the right choice for commercial work where seam reduction and cutting efficiency are priorities.

What is the biggest factor in yardage variation for this piece?

Pattern repeat is the biggest source of yardage variation. On plain fabric, the baseline calculation plus a 10-15% waste buffer is usually sufficient. Add a 13-inch pattern repeat and you may need 15-20% more. Add a 27-inch pattern repeat and the additional yardage can be 25-35% over the plain fabric calculation. Nap direction is the second-largest factor, typically adding 15-25% over plain fabric because layout optimization is restricted.

Sources

National Upholstery Association
Association of Master Upholsterers and Soft Furnishers (AMUSF)
Upholstered Furniture Action Council (UFAC)
Furniture Today (trade publication)

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