Apparel development reference

Start with a size.
Develop the right fit.

Compare adult US, UK and European clothing size references, then turn your target customer and preferred silhouette into a clear development brief.

Explore the size tables No size chart yet? Start here

Body measurements

Measurements of the person. Use these to describe the intended customer and compare a source chart.

Regional size labels

US, UK, EU and letter labels. A label match does not guarantee the same body range or fit.

Garment specification

The finished garment’s dimensions. Add the intended ease and confirm the result through sampling.

Find a starting reference

US, UK & European size tables

Adult clothing and caps.
Source-specific references, not one universal standard.

Source cm and inch figures are retained, including original rounding. Size labels never change with the unit selector.

Check the chart’s source and scope before using it. Brands define their own fits and size boundaries. Body dimensions, garment dimensions and label conversions are different types of information; do not substitute one for another.

Body measurements

Use chest or bust, waist and hip measurements to identify a reference range. These are not finished garment dimensions.

Men · Body measurements

T-shirts & hoodies: XXXS–XXXL

Circumference / length

ASOS own-brand T-shirt and hoodie body-chest reference. These letters do not specify garment width or length.

On small screens, scroll the table sideways to see every column.

T-shirts & hoodies: XXXS–XXXL — measurements in cm
Label	Body chestcm
XXXS	76–81
XXS	81–86
XS	86–91
S	91–96
M	96–101
L	101–106
XL	106–111
XXL	111–116
XXXL	116–121

Shared endpoints are retained from the source. Compare the neighbouring sizes and agree the intended fit.

Reference: A2, A3

Men · Body measurements

Casual jackets & shirts: XXS–XXL

Circumference / length

ASOS own-brand casual-jacket and shirt reference. Allowance for layers is a separate garment-development decision.

On small screens, scroll the table sideways to see every column.

Casual jackets & shirts: XXS–XXL — measurements in cm
Label	Body chestcm
XXS	81–86
XS	86–91
S	91–96
M	96–101
L	101–106
XL	106–111
XXL	111–116

Reference: A1

Men · Body measurements

Shirt collar / neck reference

Circumference / length

ASOS smart-shirt body reference. A collar measurement is not a jacket size or a trouser waist size.

On small screens, scroll the table sideways to see every column.

Shirt collar / neck reference — measurements in cm
Label	Body chestcm	Neckcm
XXS	81–86	36
XS	86–91	37
S	91–96	38
M	96–101	41
L	101–106	43
XL	106–111	44
XXL	111–116	46

Agree sleeve length and the actual collar construction separately.

Reference: A1

Men · Body measurements

Jeans & trousers: waist labels 26–40

Circumference / length

ASOS jeans and trousers reference. The label identifies an intended body-waist size, not the flat width of the finished waistband.

On small screens, scroll the table sideways to see every column.

Jeans & trousers: waist labels 26–40 — measurements in cm
Waist label	Body waistcm
26	66
28	71
29	73.5
30	76
31	78.5
32	81
33	83.5
34	86
36	91
38	96
40	101

W usually denotes waist and L denotes leg length in jeans labels. Confirm the brand chart and actual inseam; do not infer rise, hip or thigh from W alone.

Reference: A4

Men · Body measurements

Short, regular & long: inside-leg reference

Circumference / length

ASOS to-fit inside-leg guide. Actual finished lengths vary by style; cropped trousers and shorts need their own hem position.

On small screens, scroll the table sideways to see every column.

Short, regular & long: inside-leg reference — measurements in cm
Length label	Inside legcm
Short	76
Regular	81
Long	86

Reference: A4

Women · Body measurements

Regular women’s tops, dresses & outerwear

Circumference / length

ASOS own-brand regular body reference, cross-checked against its T-shirts & tops, dresses, and coats & jackets category guides.

On small screens, scroll the table sideways to see every column.

Regular women’s tops, dresses & outerwear — measurements in cm
UK label	Body bustcm	Body waistcm	Body hipcm
4	78	60	83.5
6	80.5	62.5	86
8	83	65	88.5
10	88	70	93.5
12	93	75	98.5
14	98	80	103.5
16	103	85	108.5
18	110.5	92.5	116

Hoodie projects may use a women’s body reference as their starting brief; the garment’s ease, hood, shoulder and sleeve dimensions still require development.

Reference: A5, A6, A7

Women · Body measurements

Skirts: waist & hip reference

Circumference / length

ASOS own-brand skirt body reference. Agree the actual waistband position and skirt length for the design.

On small screens, scroll the table sideways to see every column.

Skirts: waist & hip reference — measurements in cm
UK label	Body waistcm	Body hipcm
4	60	83.5
6	62.5	86
8	65	88.5
10	70	93.5
12	75	98.5
14	80	103.5
16	85	108.5
18	92.5	116

Reference: A8

Women · Body measurements

Petite: separate body reference

Circumference / length

ASOS Petite reference, designed for heights up to 5 ft 3 in. Petite is a proportion range, not a smaller regular label.

On small screens, scroll the table sideways to see every column.

Petite: separate body reference — measurements in cm
UK label	Body bustcm	Body waistcm	Body hipcm
2	73.5	55.5	80
4	76	58	82.5
6	78.5	60.5	85
8	81	63	87.5
10	86	68	92.5
12	91	73	97.5
14	96	78	102.5
16	101	83	107.5

ASOS cites a 29 in / 74 cm to-fit leg reference for Petite trousers; finished length varies by style. Do not apply this to another brand’s Petite range.

Reference: A5, A6, A9

Women · Body measurements

Curve / plus: UK 18–30 reference

Circumference / length

ASOS Curve body reference. Its UK 18 measurements differ from the regular UK 18 chart; choose the intended block and keep it consistent.

On small screens, scroll the table sideways to see every column.

Curve / plus: UK 18–30 reference — measurements in cm
UK label	Body bustcm	Body waistcm	Body hipcm
18	109	91	116.5
20	116	98	123.5
22	123	105	130.5
24	130	112	137.5
26	137	119	144.5
28	144	126	151.5
30	151	133	158.5

Curve and regular tables are separate series; do not splice their rows together into a single grading rule.

Reference: A5, A6, A9

Women · Body measurements

Tall: body reference and proportion review

Circumference / length

ASOS Tall body reference. Circumference values can match a regular chart while garment length and proportions differ.

On small screens, scroll the table sideways to see every column.

Tall: body reference and proportion review — measurements in cm
UK label	Body bustcm	Body waistcm	Body hipcm
4	78	60	83.5
6	80.5	62.5	86
8	83	65	88.5
10	88	70	93.5
12	93	75	98.5
14	98	80	103.5
16	103	85	108.5
18	110.5	92.5	116

This source table does not supply the final sleeve, body or trouser length for your design. Confirm them separately.

Reference: A5, A6, A9

Women · Body measurements

Women’s letter sizes: XS–L body reference

Circumference / length

REISS regular women’s clothing reference. Read its letter labels together with its UK labels and the separate REISS conversion chart.

On small screens, scroll the table sideways to see every column.

Women’s letter sizes: XS–L body reference — measurements in cm
REISS letter	UK	Body bustcm	Body waistcm	Body hipcm
XS	4	79	60	86
XS	6	81.5	62.5	88.5
S	8	84	65	91
S	10	89	70	96
M	12	94	75	101
M	14	99	80	106
L	16	104	85	111
L	18	110	91	118

The REISS label-conversion table includes XL / UK 20–22, but this retrieved body table ends at UK 18. No body measurements have been extrapolated.

Reference: R1

Women · Body measurements

Women’s jeans: denim labels 24–36

Circumference / length

REISS women’s jeans reference. Waist and hip measurements are separate from the denim label and the UK clothing label.

On small screens, scroll the table sideways to see every column.

Women’s jeans: denim labels 24–36 — measurements in cm
Denim label	UK	Body waistcm	Body hipcm
24	4	61	86.5
25	4–6	63	89
26	6–8	66	91.5
27	8–10	68.5	94
28	10	71	96.5
29	10–12	73.5	99
30	12	76	101.5
31	12–14	78.7	104
32	14	81.3	106.5
33	14–16	84	109
34	16	86.3	111.5
35	16–18	89	115.5
36	18	91.5	118

Stretch, rise and leg shape still need to be specified. The same waist label need not fit identically across brands.

Reference: R1

Women · Body measurements

Women’s petite, regular & long leg reference

Circumference / length

REISS standard inside-leg guide. These names and figures are specific to this source, not a universal definition of Petite or Tall.

On small screens, scroll the table sideways to see every column.

Women’s petite, regular & long leg reference — measurements in cm
Length label	Inside legcm
PETITE (P)	76
REGULAR (R)	81
LONG (L)	86

Confirm the actual finished inseam and hem position for the garment before sampling.

Reference: R1

Caps & hats · Body measurements

Fitted caps: size 7–8 head reference

Circumference / length

New Era adult 59FIFTY-family fitted-cap reference. Hat numbers such as 7 1/4 are size labels, not head circumference in inches.

On small screens, scroll the table sideways to see every column.

Fitted caps: size 7–8 head reference — measurements in cm
Fitted hat label	Head circumferencecm
7	55.8
7 1/8	56.8
7 1/4	57.7
7 3/8	58.7
7 1/2	59.6
7 5/8	60.6
7 3/4	61.5
7 7/8	62.5
8	63.5

This fitted chart does not define an adjustable or stretch-fit cap’s usable range.
The source notes that a cm figure printed on a cap label may differ from the head-circumference reference. Specify the intended head fit explicitly.

Reference: N1

Caps & hats · Body measurements

Letter / one-size head reference

Circumference / length

ASOS men’s hats: to-fit head circumference. These values illustrate that “one size” has a limited range.

On small screens, scroll the table sideways to see every column.

Letter / one-size head reference — measurements in cm
Hat label	Head circumferencecm
S/M	59
M/L	60
One Size	58–60

For an adjustable cap, separately agree the closure type, minimum and maximum usable fit, crown depth and brim dimensions. This chart alone does not specify them.

Reference: A1

Regional size labels

Read each source’s US, UK and European labels together. An EU label is not a single harmonised fit across every European brand.

Men · Size labels

Smart jackets: US / UK and EU labels

Labels vary by brand

ASOS smart jackets and waistcoats only. Do not use this chest-based numerical conversion for trouser labels or casual T-shirt letters.

On small screens, scroll the table sideways to see every column.

Smart jackets: US / UK and EU labels
ASOS letter	US / UK	EU	Body chestcm
XXS	34	44	86
XS	36	46	91
S	38	48	96
M	40	50	101
L	42	52	106
XL	44	54	111
XXL	46	56	116

Reference: A1

Women · Size labels

Women’s US, UK, EU & Italian labels

Labels vary by brand

ASOS single-size clothing conversion, from its tops and dresses guides. This label table does not add body measurements for unsupported regular sizes.

On small screens, scroll the table sideways to see every column.

Women’s US, UK, EU & Italian labels
UK	US	EU	IT
2	00	30	34
4	0	32	36
6	2	34	38
8	4	36	40
10	6	38	42
12	8	40	44
14	10	42	46
16	12	44	48
18	14	46	50
20	16	48	52
22	18	50	54
24	20	52	56
26	22	54	58
28	24	56	60
30	26	58	62

UK 2–30 maps to US 00–26 in this source. Do not treat US 00 as a measured dimension.
For jeans, a denim waist label such as 28 is a different system from a US women’s dress size.

Reference: A5, A6

Women · Size labels

France, Italy & EU: keep the labels separate

Labels vary by brand

REISS women’s international conversion, including its letter labels. This is a separate brand reference from the ASOS tables.

On small screens, scroll the table sideways to see every column.

France, Italy & EU: keep the labels separate
REISS letter	US	UK	France	Italy	EU
XS	0	4	34	36	32
XS	2	6	36	38	34
S	4	8	38	40	36
S	6	10	40	42	38
M	8	12	42	44	40
M	10	14	44	46	42
L	12	16	46	48	44
L	14	18	48	50	46
XL	16	20	50	52	48
XL	18	22	52	54	50

Example in this chart: UK 8 = US 4 = France 38 = Italy 40 = EU 36. French and EU numbers are not interchangeable.
REISS letter labels must not be assigned to ASOS body rows. German-market products may use EU labels; use the actual brand chart rather than assuming a country label fixes the fit.

Reference: R1

What about unisex and oversized clothing?

“Unisex” describes an intended audience; “oversized” describes a fit. Neither supplies a universal size conversion. Choose a reference block, specify the wearer and key body measurements, then agree chest width, shoulder width, body length and sleeve dimensions for the actual garment.

Petite, tall and curve ranges: these describe a brand’s proportions or collection, not a universal adjustment to a letter size. Develop their length, balance and grading separately with an appropriate fit reference.

See how width, length and sleeves change T-shirt fit

From size labels to a specification

Measure the garment you want to develop.

Lay it flat without stretching.
Record the method, unit and garment condition.

T-shirts, hoodies & outerwear

Width is not circumference.

A: Chest width, measured flat at the agreed point below the armhole.
B: Shoulder width, seam to seam across the back.
C: Body length, from the agreed high shoulder point to hem.
D: Sleeve length, from the shoulder seam to sleeve opening.

Agree a separate sleeve method for raglan designs. Record hood and outerwear measurements where relevant.

Trousers & shorts

Specify the waist and rise.

A: Waist width, flat. Record relaxed and stretched methods separately for elastic waistbands.
B: Front rise, measured along the seam from the agreed waistband edge to crotch.
C: Inseam, from crotch seam to leg opening along the inside leg.

Add hip width, thigh width, back rise and leg opening to the final specification.

Dresses & skirts

Confirm every fit point.

A–C: Bust, waist and hip width at defined positions on the garment.
D: Garment length, using the agreed starting point and hem location.

Mark the waist and hip positions in the tech pack. Record lining, stretch direction and intended ease.

Caps & hats

Use head circumference.

A: Head circumference determines the intended wearer. Agree the finished inner opening measurement separately.
B: Specify the closure type and usable adjustment range for an adjustable cap.

“One size” does not mean every head size. For fitted hats, confirm the source chart and finished fit.

Agree the sample condition. Note whether measurements are taken before or after washing or finishing. Confirm tolerances and grading increments in writing; do not assume a universal allowance.

When measuring the person: keep the tape level and comfortably close to the body. Follow the source chart’s chest or bust, natural waist and hip definitions. Do not pull the tape tight or add garment ease to the body measurement.

No size chart? You can still start.

Send a fit brief.
Then confirm a sample.

You do not need to invent a complete measurement chart. Give us a clear starting reference so the pattern and sample requirements can be reviewed.

Describe the customer. Target market, intended wearer and size range.
Describe the silhouette. Regular, slim, relaxed, boxy or oversized, plus fabric and stretch.
Share a useful reference. A garment, clearly labelled brand chart, or measurements from clothing that fits as intended.
Agree before production. Base-size measurements, grading, tolerances and sample approval.

Photos help communicate styling. They cannot establish accurate garment measurements on their own.

Open the clothing project planner Organise the measurements in your tech pack Prepare a hoodie measurement brief Prepare a T-shirt brief

Your starting brief

Prepare a short note to include with your enquiry. Nothing here is sent automatically.

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Discuss my fit brief

Common sizing questions

Before you choose a size.

Can I simply request a “US medium”?

Use it as an initial reference, then identify the specific chart or reference garment. US medium is not one universal garment measurement. Confirm the intended customer, silhouette, fabric and base-size specification before approving a sample.

Should a garment chest width match the body chest measurement?

No. A body chest measurement normally describes circumference; a flat garment chest measurement describes width. The finished garment also needs an agreed amount of ease for the intended fit and fabric. Confirm the measurement method rather than treating the figures as interchangeable.

Can I convert a women’s size directly into a men’s or unisex size?

Do not rely on a label-only conversion. Compare the relevant body dimensions and garment dimensions, including shoulder, chest or bust, hip and length. A unisex range needs a specified reference block and an agreed fit review.

Do these charts replace a tech pack or an approved size set?

No. They help you communicate a starting point. Production requires project-specific garment measurements, measurement methods, grading rules and tolerances, with the agreed sample approval process.

Reference notes

Sources & scope

Reference review: 8 October 2026

The tables retain their source and stated scope so you can see what each reference means. They are a starting point for adult apparel development. Check the original source when choosing a brand-specific size.

A1
ASOS — men’s general size guide
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A2
ASOS — men’s hoodies & sweatshirts
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A3
ASOS — men’s T-shirts & polo shirts
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A4
ASOS — men’s jeans & trousers
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A5
ASOS — women’s T-shirts & tops
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A6
ASOS — women’s dresses, Petite, Curve & Tall
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A7
ASOS — women’s coats & jackets
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A8
ASOS — women’s skirts
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
A9
ASOS — women’s jeans & trousers
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
R1
REISS — adult clothing size guide
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08
N1
New Era — adult fitted-cap sizing chart
Source-specific reference; size availability and fit can vary by product.
Checked 2026-10-08

UK	US	EU	IT
2	00	30	34
4	0	32	36
6	2	34	38
8	4	36	40
10	6	38	42
12	8	40	44
14	10	42	46
16	12	44	48
18	14	46	50
20	16	48	52
22	18	50	54
24	20	52	56
26	22	54	58
28	24	56	60
30	26	58	62

REISS letter	US	UK	France	Italy	EU
XS	0	4	34	36	32
XS	2	6	36	38	34
S	4	8	38	40	36
S	6	10	40	42	38
M	8	12	42	44	40
M	10	14	44	46	42
L	12	16	46	48	44
L	14	18	48	50	46
XL	16	20	50	52	48
XL	18	22	52	54	50

UK	US	EU	IT
2	00	30	34
4	0	32	36
6	2	34	38
8	4	36	40
10	6	38	42
12	8	40	44
14	10	42	46
16	12	44	48
18	14	46	50
20	16	48	52
22	18	50	54
24	20	52	56
26	22	54	58
28	24	56	60
30	26	58	62

REISS letter	US	UK	France	Italy	EU
XS	0	4	34	36	32
XS	2	6	36	38	34
S	4	8	38	40	36
S	6	10	40	42	38
M	8	12	42	44	40
M	10	14	44	46	42
L	12	16	46	48	44
L	14	18	48	50	46
XL	16	20	50	52	48
XL	18	22	52	54	50

Body measurements

Regional size labels

Garment specification

US, UK & European size tables

Body measurements

T-shirts & hoodies: XXXS–XXXL

Casual jackets & shirts: XXS–XXL

Shirt collar / neck reference

Jeans & trousers: waist labels 26–40

Short, regular & long: inside-leg reference

Regular women’s tops, dresses & outerwear

Skirts: waist & hip reference

Petite: separate body reference

Curve / plus: UK 18–30 reference

Tall: body reference and proportion review

Women’s letter sizes: XS–L body reference

Women’s jeans: denim labels 24–36

Women’s petite, regular & long leg reference

Fitted caps: size 7–8 head reference

Letter / one-size head reference

Regional size labels

Smart jackets: US / UK and EU labels

Women’s US, UK, EU & Italian labels

France, Italy & EU: keep the labels separate

What about unisex and oversized clothing?

Measure the garment you want to develop.

Width is not circumference.

Specify the waist and rise.

Confirm every fit point.

Use head circumference.

Send a fit brief.Then confirm a sample.

Your starting brief

Before you choose a size.

Sources & scope

Your privacy choices

Send a fit brief.
Then confirm a sample.

UK	US	EU	IT
2	00	30	34
4	0	32	36
6	2	34	38
8	4	36	40
10	6	38	42
12	8	40	44
14	10	42	46
16	12	44	48
18	14	46	50
20	16	48	52
22	18	50	54
24	20	52	56
26	22	54	58
28	24	56	60
30	26	58	62

REISS letter	US	UK	France	Italy	EU
XS	0	4	34	36	32
XS	2	6	36	38	34
S	4	8	38	40	36
S	6	10	40	42	38
M	8	12	42	44	40
M	10	14	44	46	42
L	12	16	46	48	44
L	14	18	48	50	46
XL	16	20	50	52	48
XL	18	22	52	54	50