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Women's Plus-Size Sizing

Women's Plus-Size Chart 2026/2027 (14W-32W to US/UK/EU/CN/JP)

Women's plus-size clothing is sold under two different systems that don't map onto each other in an obvious way: a numeric "W" size (14W, 18W, 22W and up) on one hand, and a letter "X" size (1X, 2X, 3X and up) on the other, often on the same rack from the same brand. This page lines both systems up against each other and against UK, EU, China and Japan sizing, using bust measurement as the anchor, since bust (not waist or hip alone) is what most plus-size tops and dresses are graded against.

Women's plus-size chart: numeric (W) to letter (X) to US/UK/EU

The relationship between numeric plus sizes and letter plus sizes is fairly consistent across mainstream US retailers, even though the exact bust measurement behind each size still varies by brand.

US numberUS / UK letterEUBust (in)Bust (cm)
14W–16W1X (XL)EU 4644–46 in112–117 cm
18W–20W2X (XXL)EU 5047–49 in119–124 cm
22W–24W3X (XXXL)EU 5450–52 in127–132 cm
26W–28W4X (XXXXL)EU 5853–55 in135–140 cm
30W–32W5X (XXXXXL)EU 6256–58 in142–147 cm

Each numeric row spans two W sizes because most brands don't grade a separate size for every even number once you're past 14W: 14W and 16W commonly share a single 1X cut, 18W and 20W share 2X, and so on. If a specific retailer does grade them separately, treat the bust range above as covering both and check that brand's own chart for which end of the range each individual W size lands on.

How to measure your bust for plus-size numeric sizing

Bust measurement drives numeric plus sizing more than any other single number, which makes it worth getting right before you buy.

China (CN) and Japan (JP) equivalents for women's plus sizing

The same pattern documented on the main XXXL & XXXXL size chart applies here: a China-based retailer's printed size, whether labelled numerically or with an X, commonly runs one to two sizes smaller than the same label from a US or European brand, particularly through the bust and shoulders. When a specific product's own measurements aren't listed, sizing up by one size (two, if you're near the top of your usual range) is the safer default for China-based plus-size retailers.

Japanese women's plus sizing is less standardised around a single numeric system than US sizing is, and often runs smaller overall through the bust even at a nominally equivalent size label. Where a Japanese retailer lists a bust measurement directly (rather than just a size name), that number is far more reliable than trying to match a US letter or number size across the two systems.

Men's/unisex sizes versus women's numeric plus sizes

If you're comparing a unisex or men's plus-size top (labelled L through 8XL) against a women's-specific numeric size, bust and chest measurement is still the number that lines the two systems up, but the cut is different: women's-specific plus-size garments are typically shaped through the waist rather than boxy top to bottom the way a unisex tee often is. For a straightforward like-for-like chest/bust comparison across both labelling systems, see the general XXXL & XXXXL size chart; for garment-specific shirt measurements (chest, neck and sleeve together), see the XXXXL shirt size chart. As with every chart on this site, nothing you select here is stored or sent anywhere, see the privacy policy for the full explanation.

Frequently asked questions

What is a women's XXXXL size in numeric plus sizing?
Women's XXXXL (4X) roughly corresponds to numeric sizes 26W–28W, a bust measurement of about 53–55 inches (135–140 cm), and EU size 58. See the full table above for the UK/EU/CN/JP breakdown.
Is 3X the same as XXXL for women?
Yes, in most US plus-size systems, 3X and XXXL refer to the same size: three steps above X-Large (1X, 2X, 3X), corresponding to a bust measurement of roughly 50–52 inches and numeric sizes 22W–24W.
What size is 18W in letter sizing?
18W typically corresponds to 2X (XXL) in letter sizing, alongside 20W, with a bust measurement of roughly 47–49 inches (119–124 cm).
Do women's plus sizes run the same across every brand?
No. The numeric-to-letter relationship (14W-16W to 1X, 18W-20W to 2X, and so on) is fairly consistent across mainstream US retailers, but the exact bust measurement behind each size still varies from brand to brand, sometimes by two or more inches. Always check a specific retailer's own size chart when it's available.
What size is 5X for women?
Women's 5X (XXXXXL) roughly corresponds to numeric sizes 30W–32W, a bust measurement of about 56–58 inches (142–147 cm), and EU size 62.
Is women's XXXXL sizing different from men's XXXXL sizing?
Yes. Both use bust or chest measurement as the anchor, but women's plus-size garments are typically shaped through the waist, while a unisex or men's XXXXL top is usually cut straighter from chest to hem. See the general size chart for the men's/unisex breakdown by comparison.

Need the men's/unisex chart instead?

Covers L through 8XL across US/UK/EU/CN/JP in one converter.

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