XXXL Size Chart: 3XL, 3X, Men, Women & Unisex Measurements

XXXL size chart comparing 3XL, 3X, men, women and unisex measurements for chest, bust and waist.

XXXL size chart

Compare common women, men and unisex XXXL / 3XL sizing references.

Label	Primary size equivalent	Waist guide	International note	Extra measurement	Fit note
Women 3XL / 3X	US 24-26	UK 28-30	EU 56-58	50-53 in / 127-135 cm	43-46 in / 109-117 cm
Men 3XL	Chest 54-56 in / 137-142 cm	Waist 46-50 in / 117-127 cm	EU 64-66 jacket	Neck 19-20 in / 48-51 cm	Check sleeve and torso length
Unisex 3XL tee	Chest 53-56 in / 135-142 cm	Waist 46-49 in / 117-124 cm	Varies by brand	Usually relaxed	Use garment width when provided

XXXL and 3X can mean different cuts. In women sizing, 3X is often a plus-size cut; in unisex apparel, 3XL may be a scaled straight-size cut.

Plus size chart: XL through 5X

Use bust, waist and hips to compare plus size labels across US, UK and EU systems.

Alpha	US	UK	EU	Bust	Waist	Hips
XL / 1X	US 16-18	UK 20-22	EU 48-50	42-45 in / 107-114 cm	35-38 in / 89-97 cm	45-48 in / 114-122 cm
2X	US 20-22	UK 24-26	EU 52-54	46-49 in / 117-124 cm	39-42 in / 99-107 cm	49-52 in / 124-132 cm
3X	US 24-26	UK 28-30	EU 56-58	50-53 in / 127-135 cm	43-46 in / 109-117 cm	53-56 in / 135-142 cm
4X	US 28-30	UK 32-34	EU 60-62	54-57 in / 137-145 cm	47-50 in / 119-127 cm	57-60 in / 145-152 cm
5X	US 32-34	UK 36-38	EU 64-66	58-62 in / 147-157 cm	51-55 in / 130-140 cm	61-65 in / 155-165 cm

Plus, curve and extended-size labels are not standardized. Compare the brand measurement chart whenever possible.

T-shirt size chart: unisex, women and men

Unisex tees usually follow chest width; fitted women tees may need bust and waist checks.

Alpha	Chest / bust	Garment chest width	Waist guide	Fit note
XS	31-33 in / 79-84 cm	24-26 in / 61-66 cm	23-25 in / 58-64 cm	Slim fit may feel tight across bust
S	34-36 in / 86-91 cm	27-29 in / 69-74 cm	26-28 in / 66-71 cm	Most common fitted tee range
M	37-40 in / 94-102 cm	30-33 in / 76-84 cm	29-31 in / 74-79 cm	Choose by chest for unisex tees
L	41-44 in / 104-112 cm	34-37 in / 86-94 cm	32-34 in / 81-86 cm	Relaxed fit starts here for many shoppers
XL	45-48 in / 114-122 cm	38-41 in / 97-104 cm	35-38 in / 89-97 cm	Check garment length and shoulder width
XXL	49-52 in / 124-132 cm	42-45 in / 107-114 cm	39-42 in / 99-107 cm	Extended alpha range
3XL	53-56 in / 135-142 cm	46-49 in / 117-124 cm	43-46 in / 109-117 cm	Compare garment measurements if available

Garment chest width is measured flat across the shirt. Double it to compare with body chest or bust circumference.

How to measure before choosing a size

Measure over light clothing or underwear and keep the tape parallel to the floor.

For tops, jackets, and dresses, start with bust or chest, then check waist and hips.

For pants and jeans, prioritize waist, hips, rise, and inseam instead of the label alone.

If you are between sizes, choose by garment fit: size up for structured pieces and compare stretch for knit items.

Related size charts

Plus Size Chart

Review plus-size labels from XL through 5X.

Shirt Size Chart

Compare chest and shirt measurements.

T-Shirt Size Chart

Check unisex 3XL tee sizing.

More in Clothing

Women Size Chart

Most searchers want a fast women's clothing lookup that combines numeric sizes, alpha sizes, country conversions, and body measurements.

Men Size Chart

Men's sizing searches usually split into tops/jackets by chest and neck, and pants by waist plus inseam.

Waist Size Chart

Waist searches are measurement-led: users know or need to measure their waist and want the closest pants, jeans, dress, or alpha size.

Pants Size Chart

Pants searchers need practical fit: waist, inseam, rise, and how men's W x L labels relate to women's numeric sizes.

Jeans Size Chart

Jeans searchers often know a waist number but need help converting to women's numeric sizes, hip measurements, and inseam lengths.

How to Measure for a Size Chart

Measurement-guide users need practical instructions before they can trust a chart or converter.

FAQ

Is XXXL the same as 3XL?

Usually yes in alpha sizing, but some women brands use 3X for a plus-size cut with different proportions.

What chest size is XXXL?

A common unisex or men XXXL fits about a 53-56 inch chest, but brand measurements vary.

Should I use chest or waist for XXXL?

Use the measurement tied to the garment: chest or bust for tops and jackets, waist and hips for bottoms.