Ever stepped onto the mats and felt like your gi was either swallowing you whole or barely clinging to your frame? If you’re new to Brazilian Jiu-Jitsu (BJJ), choosing the right gi size can feel like solving a puzzle — with confusing codes like A2, F3, and M1 floating around, and every brand offering slightly different measurements.
But your gi is more than just a uniform. It’s your armor, your identity, and an essential part of your performance and comfort on the mats.
In this complete guide, we’ll walk you through everything you need to know about finding the perfect fit using a Jiu Jitsu gi size chart — including clear sizing tables, tips, common mistakes to avoid, real-life examples, and a downloadable PDF to make things super simple.
What You’ll Learn from This Article
- Exactly how gi sizes work for men, women, and kids
- The standard Jiu Jitsu gi size chart explained in plain language
- Why getting the right fit matters more than you think
- How to choose the right size based on your body type
- Common sizing mistakes and how to avoid them
- Brand differences, tailoring tips, and competition regulations
- Real advice from practitioners at different levels
- Answers to every FAQ you didn’t even know you had
And yes, you’ll get a free downloadable Jiu Jitsu Gi Size Chart PDF for quick reference anytime you shop.
Understanding Jiu Jitsu Gi Sizes: What Do A2, F3, and M1 Mean?
Jiu Jitsu gi sizes use a letter-number code system:
- A = Adult Male (e.g., A1, A2, A3)
- F = Female Cut (e.g., F1, F2, F3)
- M = Youth Sizes (sometimes called M0–M4 or Y1–Y4)
Each number represents a range of height and weight, and gi sizing is not one-size-fits-all — it depends on your build, proportions, and even personal preferences.
Jiu Jitsu Gi Size Chart (Standard Sizing)
| Size | Height (ft/in) | Weight (lbs) | Best For |
|---|---|---|---|
| A0 | 5’0″ – 5’4″ | 95 – 115 | Petite or smaller athletes |
| A1 | 5’4″ – 5’8″ | 115 – 145 | Lightweight and average height |
| A2 | 5’8″ – 6’0″ | 145 – 175 | Most common size for average build |
| A3 | 6’0″ – 6’3″ | 175 – 200 | Taller and more muscular athletes |
| A4 | 6’2″ – 6’4″ | 200 – 250 | Heavier build, strong upper body |
| A5 | 6’4″ – 6’6″ | 250 – 275 | Very tall or heavy athletes |
| F1 | 5’0″ – 5’4″ | 90 – 115 | Women’s cut, smaller frame |
| F2 | 5’3″ – 5’7″ | 115 – 140 | Women’s cut, average build |
| F3 | 5’6″ – 5’9″ | 140 – 165 | Women’s cut, muscular or curvier build |
| M0–M4 | Varies | Varies | Youth sizes based on age and growth stage |
🟢 Download the Jiu Jitsu Gi Size Chart PDF for your reference.
Why Getting the Right Gi Size Matters
1. Comfort and Mobility
Too tight? You’ll struggle to move freely. Too baggy? Your opponent will have too many grips. The right fit gives you freedom of movement and control over your game.
2. Performance and Safety
An ill-fitting gi can impact your ability to shrimp, roll, and grip — or worse, create safety issues with extra fabric getting caught.
3. Competition Requirements
IBJJF and other tournaments require your gi to meet certain specifications. If it’s too short, too long, or non-compliant, you won’t be allowed to compete.
Real-Life Examples: Choosing the Right Gi Size
- Sara (Beginner, 5’6″, 135 lbs): Started with F2, but after a few weeks of shrinking in the wash, it became too short. Upgraded to F3 for more comfort and room.
- Mike (Advanced, 6’0″, 190 lbs): Started with A3, but switched to an A2L (Long) for a slimmer fit with extra sleeve length.
- Tyler (Teen, 5’3″, 110 lbs): Wears M4, but is about to transition to adult A0 as he grows.
How to Choose the Right Gi Size (Step-by-Step)
Measure Your Height and Weight Accurately.
Use a reliable scale and tape measure — don’t guess.
Start with the Manufacturer’s Chart.
Every brand is slightly different. Some offer slim (L), husky (H), or tall (T) variations.
Decide Between Competition Fit or Training Fit.
- Competition fit is more snug (less to grab).
- Training fit allows for more movement and layering.
Consider Shrinkage.
Most cotton gis shrink, even “pre-shrunk” ones. Wash cold, hang dry if unsure.
Read Reviews and Community Advice.
Forums like Reddit or Jiu Jitsu Facebook groups are gold mines for sizing insights.
Common Mistakes to Avoid
Buying the Wrong Size Because It “Sort of Fits”
If you’re in between sizes, don’t just settle. Look for L (Long) or H (Heavy) options.
Ignoring Shrinkage
Even preshrunk gis shrink a little. Expect about 2–5% shrinkage unless it’s a synthetic blend.
Not Considering Brand Differences
An A2 from Atama is not the same as an A2 from Tatami or Fuji. Check the brand’s size chart every time.
Training in a Gi That’s Too Loose
More material means more grip opportunities for your opponent.
Tips for a Better Fit
- Wash cold, hang dry to preserve size
- Avoid heavy machine drying unless you want intentional shrinkage
- Look for “A2L,” “A2H,” or “Slim Fit” if you’re in-between
- Ask your instructor or gym mates what brands and sizes they use
- Break in your gi — it usually becomes more comfortable after a few rolls
Kids and Youth Gi Sizing
Youth sizing typically uses M0–M4 or Y1–Y4, and is based more on height than weight. Growth spurts are frequent, so buy slightly bigger if you want it to last a few months.
Tip: Avoid overspending on kids’ gis — they’ll outgrow them faster than they wear them out.
Gi Sizing by Brand: What to Know
| Brand | Fit Style | Notes |
|---|---|---|
| Fuji | Traditional, forgiving cut | Great for beginners and bulkier frames |
| Tatami | Slightly snug, modern fit | Runs small — watch for shrinkage |
| Atama | Athletic fit | Strong material, suitable for competitors |
| Kingz | Lightweight options | A2L and A3L options available |
| Hayabusa | Pre-shrunk, high-end fit | Very consistent sizing, premium feel |
| Gameness | Varied fit types | Offers short and tall sizes for customization |
Trends and Innovations in Gi Sizing
- Custom tailoring options are becoming more popular
- Hybrid sizes (like A2L, F3S) are helping in-between body types
- Lightweight gis are changing fit expectations
- More gender-specific cuts are being offered by premium brands
Alternatives: When Standard Sizes Don’t Work
- Look for brands offering custom-tailored gis
- Try hybrid sizing (e.g., A2 jacket with A1 pants)
- Some companies allow you to mix and match top and bottom sizes
FAQs: Everything You Might Still Be Wondering
What does “A2L” or “A2H” mean?
“A2L” = A2 Long (for taller people). “A2H” = A2 Husky (for broader builds).
Can I shrink my gi if it’s too big?
Yes — wash hot and dry on high. But be careful; over-shrinking can ruin it.
How should a gi jacket fit?
Sleeves should reach no more than 5 cm from the wrist bone. The skirt should fall below the waist but above mid-thigh.
Can I wear a women’s gi as a man, or vice versa?
Technically, yes — but the cut may not be comfortable. Women’s gis are tailored in the waist and hips.
What’s the best gi brand for beginners?
Fuji and Tatami are affordable, well-sized, and durable for new practitioners.
Do gis stretch over time?
Not really. If anything, cotton gis shrink a bit and then maintain that size.
Final Thoughts: The Perfect Fit Is Within Reach
Finding your ideal Jiu Jitsu gi size doesn’t have to be a guessing game.
With the right information, a clear size chart, and a bit of personal measurement, you’ll be able to step onto the mats with confidence, comfort, and style — every single time.
So whether you’re preparing for your first class or upgrading for competition, use the size chart, ask questions, and prioritize your comfort and performance.
🟢 Download the full Jiu Jitsu Gi Size Chart PDF and keep it handy the next time you shop.