A reliable BJJ gi sizing chart is more than a table showing A0 through A5. For manufacturers, sizing is a grading system that determines how a gi fits across different body types, how patterns are developed, how measurements change between sizes, and how consistently the finished garments perform in bulk production.
For BJJ academies, martial arts brands, distributors, and wholesale buyers, an inaccurate size chart can create problems long after production is finished. Poor grading may lead to sleeves that are too short, trousers that do not provide enough room, jackets that feel restrictive, or excessive variation between sizes.
The A0-A5 system provides a familiar foundation, but manufacturers should build each size around clearly defined body measurements, garment measurements, shrinkage allowances, and the intended fit of the product.
This guide explains how manufacturers can develop a practical BJJ gi sizing chart, grade A0-A5 patterns, manage extended sizes, and maintain sizing consistency throughout bulk production.
A BJJ gi sizing chart connects a wearer’s body measurements with the corresponding gi size.
Unlike standard casual clothing, a BJJ gi needs to account for grappling movement, jacket overlap, sleeve length, trouser length, mobility, and the way the uniform changes after washing.
The letter “A” generally refers to adult sizing, while the number identifies the general size progression.
A typical adult grading structure includes:
Size | General Positioning | Typical Use |
A0 | Small adult | Smaller frames |
A1 | Small to medium adult | Slim to average builds |
A2 | Medium adult | Core standard size |
A3 | Large adult | Larger or taller builds |
A4 | Extra-large adult | Larger frames |
A5 | Extended adult | Very large or tall builds |
These labels should be treated as a manufacturer’s sizing framework, not as universal measurements. Current commercial charts demonstrate that brands can assign substantially different height, weight, and garment measurements to the same A-size.
An A2 from one manufacturer may not measure the same as an A2 from another manufacturer.
This happens because brands can use different:
The A2 label tells the buyer where the garment sits within the manufacturer’s grading system. It does not, by itself, define the exact chest, jacket length, sleeve length, waist, thigh, or inseam measurement.
For manufacturers, the technical specification should always take priority over the size code. The final chart should be created from approved garment measurements and a controlled grading system.
A professional sizing system starts with the target customer rather than copying another company’s chart.
Before creating the grading, decide whether the gi is intended to have a:
The intended fit affects the amount of ease built into the pattern.
Manufacturers normally develop a base pattern before grading it across the complete size range.
A2 is often useful as a central reference point because it represents a common adult size category, but the appropriate base size depends on the target market and product strategy.
The base pattern becomes the reference from which other sizes are graded.
If the base pattern is poorly balanced, increasing or decreasing measurements will not automatically create a good-fitting gi.
The base-size sample should be physically tested before the complete A0-A5 range is produced. This allows manufacturers to identify proportion problems before they are multiplied across multiple sizes.
A useful BJJ gi sizing chart should provide more than height and weight.
Manufacturers can use body measurements to establish the intended customer profile.
Important measurements include:
These measurements help define the body range that each size is intended to accommodate.
Garment measurements are equally important for production.
A technical BJJ gi specification may include:
These two measurement systems should not be confused.
Body measurements describe the wearer.
Garment measurements describe the finished product.
A buyer may select an A2 based on height and weight, but the factory needs garment measurements to manufacture the A2 consistently.
The published size chart, approved sample, pattern measurements, and production specification should all correspond to the same grading system.
The following framework can be used as a starting structure when developing a manufacturer’s own chart.
Size | Grading Focus | Manufacturer’s Main Consideration |
A0 | Smaller adult | Shorter body and narrower proportions |
A1 | Small adult | Balanced small-to-medium proportions |
A2 | Core adult | Primary reference for standard grading |
A3 | Large adult | Increased width and length |
A4 | Extra-large adult | Larger circumference and longer proportions |
A5 | Extended adult | Large circumference with appropriate length |
This framework is intentionally not presented as a universal height-and-weight chart. Commercial sizing charts vary considerably, so manufacturers should establish their own measurements according to the approved pattern and target market.
Copying a competitor’s A0-A5 ranges can create problems because the competitor may use a different fit block, fabric, shrinkage allowance, or customer profile.
The objective is not to make your A2 identical to another company’s A2.
A buyer should be able to order A1, A2, and A3 from the same brand and understand how each size changes.
Grading means systematically changing pattern measurements as the size increases or decreases.
The jacket generally requires changes to:
The changes should maintain the proportions of the original pattern rather than simply making every measurement larger by the same amount.
BJJ trousers require their own grading system.
Important dimensions include:
A common manufacturing mistake is to grade the jacket and trousers independently without checking the complete uniform.
A wearer may fit the jacket correctly but find the trousers too tight or too long.
Every graded size should be evaluated as a complete jacket-and-trouser set before bulk production.
A0-A5 provides the basic grading structure, but body proportions do not increase uniformly.
This is why many commercial brands introduce variations such as L and H sizes. Current manufacturer charts show examples including A1L, A2L, A2H, A3L, and A3H.
“L” commonly indicates a longer or tall-oriented version of a standard size.
For example:
These variations can provide additional length without simply increasing width.
“H” commonly identifies a broader or heavier version of a size.
Examples include:
The exact meaning should always be defined by the manufacturer because these suffixes are not completely standardized.
Two people can have similar body weights but very different proportions.
A tall, lean athlete may need additional sleeve and trouser length without the extra width of a heavier build.
Extended sizes allow manufacturers to serve these body types without making the standard A-size range unnecessarily wide.
Sizing cannot be finalized without considering fabric behavior.
Cotton BJJ gi fabrics can change after laundering, which means a garment that fits correctly before washing may fit differently afterward.
Manufacturers should establish the expected shrinkage behavior of the selected fabric before finalizing garment measurements.
A sizing system that ignores shrinkage can create inconsistent post-wash measurements.
The approved sample should be measured before washing and again after the defined wash-and-dry process.
If the fabric changes significantly, production measurements should account for the expected change rather than relying only on pre-wash measurements.
This is also why shrinkage control and pre-shrunk fabric preparation should be considered alongside BJJ gi sizing rather than treated as a separate quality issue.
GSM can also affect how a garment behaves, although GSM itself does not determine the correct size.
A lightweight and heavyweight gi can use the same basic pattern while producing different fabric hand-feel, structure, and post-wash behavior.
The size specification defines dimensions.
GSM defines fabric weight per square metre.
These specifications work together but should not be confused.
Manufacturers should establish the approved garment dimensions and then verify how the selected fabric performs within those dimensions.
The final product should be evaluated after washing, not only as an unwashed cutting sample.
For a deeper look at how fabric construction affects BJJ gi development, understanding pearl weave and ripstop fabric construction can help buyers specify the material separately from the grading system.
A manufacturer selling internationally should avoid assuming that one sizing chart automatically works for every market.
United States and Canada
US and Canadian buyers commonly expect clear height and weight guidance alongside the A-size system.
The chart should therefore be easy to scan and supported by actual garment measurements.
United Kingdom and Europe
European buyers may be more accustomed to metric measurements, so manufacturers serving these markets can provide both inches and centimetres.
Australia
Australian buyers can also benefit from dual-unit charts, particularly when products are distributed through international e-commerce channels.
Brazil and Other BJJ Markets
Brazil has a strong BJJ culture, but manufacturers should still define their own product measurements rather than assuming that an A-size label has identical dimensions across suppliers.
Middle East Markets
For markets such as the UAE and Saudi Arabia, manufacturers may encounter a wide range of body proportions across customer groups.
International Charts Should Use Dual Measurements
Inches and Centimetres
Providing both units reduces conversion errors for wholesale buyers and distributors.
Keep the Conversion Consistent
The centimetre measurement should be calculated from the same underlying specification rather than manually rounded differently across the chart.
Competition-oriented gis require particularly careful measurement control.
A gi that is excessively loose, too short, or incorrectly proportioned may create problems during competition inspection.
Manufacturers should therefore treat competition sizing as a complete product specification rather than simply assigning an A-size label.
Competition rules can change, and requirements can differ by organization or event.
The actual production garment should be checked against the applicable requirements before being marketed as competition-ready.
The size chart should be part of the technical specification rather than an isolated marketing graphic.
Recommended Tech Pack Sections
A manufacturer can include:
No production process produces every garment at exactly the same measurement.
Manufacturers should define acceptable tolerances for each important measurement.
The chart represents the intended specification, while the production tolerance defines how much variation is acceptable around that specification.
The tolerance should be established during product development and included in the production documents used for quality control.
A correct pattern does not automatically guarantee correct production.
Quality control should verify that the finished garments remain within the approved measurement tolerances.
Before bulk manufacturing, review:
Measure representative garments from the production run rather than checking only the first sample.
A2 may be the base size, but grading errors can appear more clearly in A0, A4, or A5.
A production size set should demonstrate that the grading remains consistent from the smallest to the largest planned size.
Copying Another Brand’s A0-A5 Chart
A competitor’s chart may use different patterns and fabric specifications.
Treating A2 as an Industry Standard
A2 is a size label, not a universal measurement.
Using Only Height and Weight
Height and weight are useful starting points, but they do not describe every body proportion.
Ignoring Sleeve and Trouser Length
A gi can have an appropriate overall size while still having sleeves or trousers that are too short or too long.
Forgetting Shrinkage
Post-wash measurements can differ from the original sample.
Skipping Extended Sizes
Some customers need length or width variations that standard A0-A5 grading cannot provide.
Publishing a Chart That Does Not Match Production
The online chart, tech pack, approved sample, and finished garments must use the same measurement system.
Before placing a bulk order, buyers should ask:
A complete size set allows buyers to inspect the grading instead of evaluating only one garment.
The size set should demonstrate how the pattern changes across the planned range.
Once approved, the size set becomes an important reference for production and quality control.
For brands and academies ordering custom uniforms, the sizing process can be developed alongside fabric, construction, branding, and packaging specifications.
Instead of simply requesting an “A0-A5” size range, buyers can provide their preferred body measurements or an existing size chart. Jiu Jitsu Gears can then use these specifications to develop a corresponding production size system that matches the intended fit and target customer.
This approach is particularly useful when developing custom BJJ gi manufacturing programs where consistent sizing is important across repeat wholesale orders. A clearly defined grading system helps ensure that A1, A2, A3, and other sizes maintain predictable proportions from one production run to the next.
For larger academy and wholesale programs, the sizing system can also be integrated into bulk BJJ manufacturing specifications so that grading, labeling, packing, and quality inspection all follow the same approved standard.
Brands developing their own product line can also work with Jiu Jitsu Gears for custom BJJ apparel manufacturing, allowing the sizing architecture to be developed across gis, rash guards, shorts, and other training products while maintaining a consistent brand fit.
What Does A0-A5 Mean in BJJ Gis?
A0-A5 is an adult BJJ gi size progression. The exact measurements assigned to each size vary by manufacturer.
Is A2 a Standard BJJ Gi Size?
A2 is a common adult size category, but there is no single universal A2 measurement. Manufacturers can assign different height, weight, and garment measurements to A2.
Are BJJ Gi Size Charts Universal?
No. Commercial size charts demonstrate differences between brands and even between product models. Always use the manufacturer’s specific chart.
What Measurements Should a BJJ Gi Size Chart Include?
A useful chart can include height, weight, chest, jacket length, sleeve length, waist, trouser inseam, and other garment measurements relevant to the product.
What Is A1L in BJJ Gi Sizing?
A1L generally indicates a longer version of A1 intended for a taller or longer-proportioned athlete. The exact measurements depend on the manufacturer.
What Is A2H in BJJ Gi Sizing?
A2H generally indicates a broader or heavier variation of A2. The exact definition and measurements should be established by the manufacturer.
Should BJJ Gi Measurements Be Taken Before or After Washing?
Manufacturers should clearly identify the measurement condition. For production control, both pre-wash and post-wash measurements can be useful when evaluating shrinkage.
Can a Manufacturer Create a Custom BJJ Gi Size Chart?
Yes. A manufacturer can develop custom grading based on an approved base pattern, target customer measurements, fabric behavior, and the brand’s preferred fit.
A strong BJJ gi sizing chart should not simply copy A0-A5 labels from another brand.
For manufacturers, the real objective is to create a repeatable grading system in which each size has clearly defined body and garment measurements, controlled tolerances, appropriate shrinkage allowances, and a consistent relationship between jacket and trousers.
A0 through A5 can provide the foundation, while extended sizes such as A1L, A2L, A2H, and A3H can address different body proportions where required.
The most reliable process is straightforward: define the target fit, develop the base pattern, grade the complete size range, test the finished garments, approve the size set, and use those specifications consistently throughout bulk production.
