Amazon Size Chart: Set Accurate Sizes and Reduce Returns

Why do 61% of apparel returns stem from sizing issues? Amazon size charts provide detailed measurements that help customers select the correct fit, reducing returns by up to 32% while increasing conversions. This guide covers requirements, upload steps, and optimization strategies for maximum sales impact.

An Amazon size chart provides product-specific measurement information on detail pages, displaying exact dimensions such as chest, waist, and length in both inches and centimeters. Brand-registered sellers customize these charts to align their product sizing with standard formats, helping customers select the correct fit and significantly reducing return rates.

Size charts deliver critical benefits for both sellers and customers:

• Reduces returns and associated costs: Sizing inconsistencies rank among the top reasons for product returns in apparel categories. Accurate charts with standardized measurements help customers make informed decisions, minimizing costly returns for sellers.
• Improves customer confidence and conversions: Clear measurement information removes purchase uncertainty and encourages buyers to complete transactions. When customers trust that products will fit properly, conversion rates increase significantly.
• Enables sizing standardization: International manufacturers often use different sizing systems that confuse customers. Amazon’s charts translate varied measurements into consistent, localized sizes that align with regional shopping expectations.
• Enhances search visibility: Products with complete and accurate sizing data receive preferential treatment in Amazon’s search algorithm, leading to higher visibility in search results and category listings.
• Supports brand-specific guidance: Sellers can submit custom size charts tailored to their unique product designs. This brand-specific approach addresses fitting issues more effectively than generic sizing, particularly for specialty items.

Amazon Size Chart Requirements Explained

Amazon requires specific size attributes for all US apparel listings to maintain consistency and help customers find the right fit.

Key Apparel Size Attributes Amazon Requires

Amazon requires all U.S. apparel listings to include standardized size attributes to help customers find the right fit and maintain product eligibility.

Required attributes for all apparel products:

• Target gender: Male, female, or unisex
• Age range description: Target audience (e.g., “little kid” for ages 6-8, “big kid” for ages 10-12)
• Apparel size class: Sizing format used, such as numerical (size 4) or alpha (small)
• Apparel size value: The actual size of your product

Additional attributes for specific product types:

• Apparel size body type: Slim, regular, plus, big, husky (default: regular)
• Apparel size height: Petite, short, regular, tall, extra tall, long, extra long (default: regular)

Mandatory Attributes By Product Type

Each product category has specific attribute requirements based on its sizing needs.

General Apparel

General apparel products including dresses, coats, sweaters, tunics, pajamas, socks, and underpants require only the base apparel size attributes without additional specialized measurements. Unlike shirts that need neck and sleeve specifications or pants requiring waist and inseam values, these products use simpler sizing combinations.

Required base attributes:

• Target Gender (Male, Female, Unisex)
• Age Range Description (Adult, Kid, Toddler, Infant)
• Apparel Size Class (Numeric, Alpha, or Age)
• Apparel Size Value (the actual size)

Optional attributes based on product type:

• Apparel Size Body Type (Regular, Plus) – conditionally required
• Apparel Size Height Type (Petite, Short, Regular, Tall, Extra Tall) – conditionally required
• Apparel Size To Value (for creating size ranges)

Display format examples:

Product Type	Attributes	Customer Display
Dress	Female, Adult, Numeric (40), Regular, Petite	40 Petite
Coat	Female, Adult, Alpha (L), Regular, Regular	L
Pajamas	Toddler, Age (2-3 Years), Regular, Regular	2-3 Years
Sweater	Male, Adult, Alpha (M), Regular, Regular	M

Shirts:

Shirt products offer specialized sizing options, including neck and sleeve measurements, in addition to standard formats:

Size Class	Required Fields	Display Examples
Alpha/Numeric	Size Value	L, L Tall, 40
Neck	Neck Size Value	15″ Neck, 14.5″ Neck Big
Neck Sleeve	Neck Size + Sleeve Length	42 Neck 87-88 Sleeve, 40-42 Neck 88 Sleeve Tall

Bottoms (Pants, Shorts, Overalls)

Bottom products support waist and inseam measurements for precise fit specifications:

Size Class	Required Fields	Display Examples
Alpha/Numeric	Size Value	M, M Plus Short, 32
Waist	Waist Size Value	40, 31 Long
Waist Inseam	Waist Size + Inseam Size	37W / 32L, 48W x 24L

Skirts

Size Class	Required Fields	Display Examples
Numeric/Alpha	Size Value	44, M Regular
Waist	Waist Size Value	30, 30 Regular

Shapewear (Bras, Corsets, Swimwear)

Skirt products can use standard sizing or waist measurements based on design preferences:

Size Class	Required Fields	Display Examples
Numeric/Alpha	Size Value	M, 34 Plus
Cup Band	Cup Size + Band Size	32A, 34D, 90D, 28-32J/JJ

Amazon Men’s Measure Guide

Use these standard measurement tables as a reference for men’s apparel sizing across jackets, shirts, and trousers:

Jackets

General Size	Chest	Sleeve Length
XS	34 inches (86 cm)	25 inches (63.5 cm)
S	36 inches (91 cm)	25.25 inches (64.1 cm)
M	38 inches (97 cm)	25.5 inches (64.8 cm)
L	40 inches (102 cm)	25.75 inches (65.4 cm)
XL	42 inches (107 cm)	26 inches (66.0 cm)
2XL	44-46 inches (112-117 cm)	26.25-26.5 inches (66.7-67.3 cm)
3XL	48-50 inches (122-127 cm)	26.5-26.75 inches (67.3-67.9 cm)
4XL	52-54 inches (132-137 cm)	26.75-27 inches (67.9-68.6 cm)
5XL	56-58 inches (142-147 cm)	27.25-27.5 inches (69.2-69.9 cm)

Shirts

General Size	Neck	Chest	Sleeve Length
S	14-14.5 inches (35.5-37 cm)	34-36 inches (86-91 cm)	31.5-32 inches (80-81 cm)
M	15-15.5 inches (38-39.5 cm)	38-40 inches (96-101 cm)	32.5-33 inches (82.5-84 cm)
L	16-16.5 inches (40.5-42 cm)	42-44 inches (107-111 cm)	33.5-34 inches (85-86.5 cm)
XL	17-17.5 inches (43-44.5 cm)	46-48 inches (117-122 cm)	34.5-35 inches (87.5-89 cm)
XXL	18-18.5 inches (45.5-47 cm)	50-52 inches (127-132 cm)	35.5-36 inches (90-91.5 cm)

Trousers & Jeans – Waist

General Size	Waist
XS	28-30 inches (71-76 cm)
S	30-32 inches (76-81 cm)
M	32-34 inches (81-86 cm)
L	34-36 inches (86-91 cm)
XL	36-38 inches (91-96 cm)
XXL	40-44 inches (101-111 cm)
3XL	46-50 inches (117-127 cm)
4XL	52-54 inches (132-137 cm)
5XL	56-60 inches (142-152 cm)
6XL	62-64 inches (157-162 cm)

Trousers & Jeans – Inseam

General Size	Inseam Length
Extra Short	27 inches (69 cm)
Short	29 inches (74 cm)
Regular	31 inches (79 cm)
Long	33 inches (84 cm)
Extra Long	35 inches (89 cm)

Amazon Women’s Apparel Size Chart

Women’s sizing includes four distinct categories to accommodate different body types and proportions:

Regular Sizing

General Size	US Clothing Size	Chest/Bust (inches)	Waist (inches)	Hips (8″ from waist)
XS	0-2	32-33	24-25	34.5-35.5
S	4-6	34-35	26-27	36.5-37.5
M	8-10	36-37	28-29	38.5-39.5
L	12-14	38.5-40	30.5-32	41-42.5
XL	16-18	41.5-43	33.5-35	44-45.5

Plus Sizing

General Size	US Clothing Size	Chest/Bust (inches)	Waist (inches)	Hips (8″ from waist)
0X	12W	40	33	42
1X	14W-16W	42-44	35-37	44-46
2X	18W-20W	46-48	39-41	48-50
3X	22W-24W	50-52	43-45	52-54
4X	26W-28W	54-56	47-49	56-58
5X	30W-32W	58-60	51-53	60-62

Petite Sizing

General Size	US Clothing Size	Chest/Bust (inches)	Waist (inches)	Hips (8″ from waist)
XS	2P	32	23.5	34
S	4P-6P	33-34	24.6-25.5	35-36
M	8P-10P	35-36	26.5-27.5	37-38
L	12P-14P	37.5-39	29-30.5	39.5-41

Juniors Sizing

General Size	US Clothing Size	Chest/Bust (inches)	Waist (inches)	Hips (8″ from waist)
XS	0-1	31-32	23-24	33-34
S	3-5	33-34	25-26	35-36
M	7	35	27	37
L	9-11	36-37.5	28-29.5	38-39.5
XL	13	39	31	41

Amazon Kids and Baby Size Chart

Children’s sizing varies by age range and includes measurements for babies through big kids:

Baby (0-24 Months)

US Size	Age	Weight (lbs)	Length (inches)
P	Preemie	Up to 5	Up to 17
NB	Newborn	5-8	Up to 20
3M	0-3 Months	8-12.5	20-23.5
6M	3-6 Months	13-16.5	24-25.5
9M	6-9 Months	17-20.5	26-27.5
12M	9-12 Months	21-23.5	28-30.5
18M	12-18 Months	24-26.5	31-32.5
24M	18-24 Months	27-30	33-34.5

Little Girls (2-6x)

US Numeric	US Alpha Size	Age	Weight (lbs)	Height (inches)
2T	2T	2 Years	24-29	33-35
3T	3T	3 Years	29-33	35-38
4T	4T	4 Years	33-37.5	39-41
4	S (4)	3-4 Years	37.5-42	42-44
5	M (5)	4-5 Years	42-46	45-47
6	L (6)	5-6 Years	46-53	48-49
6x	XL (6x)	6-7 Years	53-58	50-52

Little Boys (2-7)

US Numeric	US Alpha Size	Age	Weight (lbs)	Height (inches)
2T	2T	2 Years	24-29	33-35
3T	3T	3 Years	29-33	35-38
4T	4T	4 Years	33-37.5	39-41
4	S (4)	3-4 Years	37.5-42	42-44
5	M (5)	4-5 Years	42-46	45-47
6	L (6)	5-6 Years	46-53	48-49
7	XL (7)	6-7 Years	53-58	50-52

Big Girls (7-16)

US Numeric	US Alpha Size	Age	Height (inches)	Bust (inches)	Waist (inches)	Hips (inches)
7	S (7-8)	6-7 Years	51-52	26-27	22.5	28
8	S (7-8)	7-8 Years	53-54	27-28.5	23.5	29
10	M (10-12)	8-9 Years	55-56	28.5-29.5	24.5	30
12	M (10-12)	10-11 Years	57-59	30-31	25.5	31-32
14	L (14)	11-12 Years	60-62	31-32	26.5	33-34
16	XL (16)	12-13 Years	63-64	33-34	27.5	35-36

Big Boys (8-20)

US Numeric	US Alpha Size	Age	Height (inches)	Chest (inches)	Waist (inches)	Hips (inches)
8	S (8)	7-8 Years	50-53	27-28	23-24	28
10	M (10-12)	8-9 Years	54-57	28.5-30	24-25	29
12	M (10-12)	10-11 Years	58-60	30-31	25.5-26.5	30
14	L (14-16)	11-12 Years	61-63	31-32	26.5-28	31-32
16	L (14-16)	12-13 Years	64-65	33-34	28-29	33-34
18	XL (18-20)	13-14 Years	65-66	34-35	29-30	34-35
20	XL (18-20)	14+ Years	66-67	35-36	30-31	35-36

How To Upload Size Charts To Your Listing

Brand-registered sellers can upload size charts independently by following these four steps:

• Step 1. Access the Tool: Navigate to the Catalog menu in Seller Central and select “Add size charts” from the dropdown options.
• Step 2. Identify Your ASIN: Choose your marketplace location and search for the ASIN you want to add a size chart to. This step identifies the correct department and product type category, such as dresses, pants, or shirts.
• Step 3. Download and Edit Template: Download the Excel template provided by Amazon for your specific product type. Fill in the measurement data for your products according to the template format, then save the completed file.
• Step 4. Upload and Publish: Upload the completed template through the same tool interface. Use the preview function to verify the chart displays correctly, check for any errors or formatting issues, and click “Publish” to make the size chart live on your product listing.

Expert Tips To Optimize Your Size Charts

Implementing these proven strategies maximizes size chart effectiveness and reduces return rates.

Follow Platform Design Standards

Meeting Amazon’s technical specifications directly impacts your size chart’s visibility across devices. While the platform accepts images between 1000 and 10,000 pixels, optimization requires strategic decisions beyond minimum requirements.

Sellers should adhere to these critical technical standards:

• Use JPEG format with 1600×1600 pixel minimum dimensions to activate zoom functionality, which research shows increases customer confidence and reduces pre-purchase hesitation
• Apply a 4:5 aspect ratio (2000×2500 pixels) for mobile optimization, as this format makes images appear 15-20% larger in smartphone search results compared to standard 1:1 squares
• Ensure size chart tables occupy 85% of the image frame while maintaining text readability, since undersized charts get rejected and oversized text appears pixelated after compression
• Test mobile rendering before publishing, where 60% of Amazon traffic originates, confirming that text remains legible at a minimum 12pt size on smaller screens

Add Descriptive Sizing Instructions

Simply providing measurements without instructions leaves customers confused about how to use them. Studies show 83% of apparel sites fail to include adequate measurement guidance, directly contributing to high return rates.

Effective measurement instructions should include these components:

• Provide visual body diagrams showing exactly where to measure chest, waist, hips, and inseam with numbered reference points, as visual guides reduce measurement errors by 40%
• Write specific step-by-step instructions like “Wrap tape under arms around fullest chest part, keeping tape parallel to floor” rather than generic terms that customers interpret differently
• Recommend proper measurement tools, such as flexible fabric tape measures, and suggest alternatives like using string, then measuring against a ruler, for customers without proper tools
• Warn against common mistakes, including measuring over bulky clothing or pulling tape too tight, since these errors account for nearly half of all sizing issues

Maintain Current Size Option Listings

Outdated size information creates purchase barriers and drives returns. Regular maintenance ensures charts match actual inventory and account for manufacturing variations that naturally occur across production runs.

Implement these ongoing maintenance practices:

• Conduct quarterly accuracy reviews by physically measuring 3-5 samples from each production batch, since garment dimensions can vary up to 2.5% between manufacturing runs
• Sync size availability within 48 hours of stock changes, removing discontinued sizes from charts immediately to prevent customer frustration from ordering unavailable options
• Update measurements when changing suppliers or introducing new fits, as knit fabrics typically require different sizing specifications than woven materials due to stretch properties
• Verify consistent grading between sizes, ensuring measurements increase uniformly (2 inches for XS-L, 2.5-4 inches for L+) rather than showing irregular jumps that confuse customers

FAQs About Amazon Size Charts