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Here is a Judo Gi Size Chart that helps you select the correct Judo gi (uniform) size based on height and weight. Judo gis are typically sized using height and weight as primary metrics. Below is a general size chart, which can vary slightly between different brands.

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Judo Gi Size Chart (Common Brands)

Size	Height (cm)	Weight (kg)	Height (ft/in)	Weight (lbs)
0000	90–100 cm	20–25 kg	2’11” – 3’3″	44–55 lbs
000	100–110 cm	25–30 kg	3’3″ – 3’7″	55–66 lbs
00	110–120 cm	30–35 kg	3’7″ – 3’11”	66–77 lbs
0	120–130 cm	35–45 kg	3’11” – 4’3″	77–99 lbs
1	130–140 cm	45–55 kg	4’3″ – 4’7″	99–121 lbs
2	140–150 cm	55–65 kg	4’7″ – 4’11”	121–143 lbs
3	150–160 cm	65–75 kg	4’11” – 5’3″	143–165 lbs
4	160–170 cm	75–85 kg	5’3″ – 5’7″	165–187 lbs
5	170–180 cm	85–95 kg	5’7″ – 5’11”	187–209 lbs
6	180–190 cm	95–105 kg	5’11” – 6’3″	209–231 lbs
7	190–200 cm	105–115 kg	6’3″ – 6’7″	231–254 lbs

Key Notes on Judo Gi Sizing:

1. Fit: Judo gis are designed to be loose-fitting for comfort and ease of movement. It’s important to remember that the gi will shrink a little after the first few washes (due to cotton material), so it’s a good idea to size up slightly if you’re in-between sizes.
2. Sizing Based on Weight & Height: Generally, the height is the most critical factor when selecting a gi, followed by weight. Choose a size that best matches both, but height tends to take precedence in determining the gi’s length.
3. Shrinkage: Expect around 5-10% shrinkage with most cotton judo gis. This is why many people recommend purchasing one size larger than your normal size if you are in between two sizes.
4. A Note on Size Numbers:
   • 0000, 000, 00: These sizes are typically for younger children or smaller frames.
   • 0, 1, 2, 3, 4, 5, 6, 7: These sizes are for adults or larger youth. As you go higher in numbers, they usually correspond to a larger body size.
5. Brands: Different brands may use slightly different size charts, so always check with the specific brand for the most accurate sizing guide.

How to Choose Your Size:

• If your height and weight fall into two different sizes, it’s often better to size up for a looser fit (especially if you’re taller or heavier).
• If you’re unsure, try contacting the brand for guidance based on your specific measurements.

Additional Tips:

• Judo Gi Material: The type of material (single weave, double weave, pearl weave) affects the fit and feel of the gi. Higher-end gis (like double-weave) might be slightly bulkier, so take that into account when selecting your size.

FAQs About Judo Gi Sizing

1. How do I know what size Judo gi I need?

Judo gi sizes are typically based on height and weight. Most brands follow a size system like 000 to 8 (or A0 to A5), with each size matching a height/weight range. Always check the brand’s sizing chart for accuracy.

2. What if I’m between sizes?

If you’re between sizes, consider:

• Sizing up for growing children or a looser fit
• Sizing down for a snug, competition-style fit
  Also, keep in mind that cotton gis can shrink slightly after washing.

3. Do Judo gis shrink after washing?

Yes — most cotton or cotton-blend Judo gis will shrink 3–5% after the first few washes, especially if dried with heat. To minimize shrinkage, wash cold and hang dry.

4. What’s the difference between kids’ and adult sizing?

Kids’ gis often use sizes like 000 (smallest) to 2, while adult sizes range from 3 to 8. Some brands use lettered sizes (like A1, A2) for adults. Always use a sizing chart that includes both height and weight ranges.

5. What’s the ideal gi fit for training vs competition?

• Training: Slightly looser for comfort and movement
• Competition: Tighter, cleaner fit (but must meet IJF regulations if competing)
  Make sure sleeve and pant lengths meet your dojo or competition rules.

6. Can I tailor or adjust a Judo gi?

Yes, minor alterations (like shortening sleeves or pants) are common. However, avoid altering seams that could weaken the gi or violate competition rules.

7. How should a Judo gi fit?

A good fit should:

• Allow free movement
• Cover wrists and ankles appropriately
• Not be excessively baggy or tight
• Meet dojo or tournament standards for sleeve/pant length

8. Is there a difference between men’s and women’s Judo gi sizing?

Most Judo gis are unisex, but some brands offer women’s cuts with adjusted proportions (narrower shoulders, shorter sleeves, more room in the hips). Always check the product details.

9. Should I size up for kids since they grow fast?

Yes, sizing up can be practical for kids — but not too much. A gi that’s too large can be unsafe or uncomfortable. Look for adjustable waistbands and consider future growth when choosing a size.

10. What material is best for a Judo gi?

• Cotton: Traditional, breathable, may shrink
• Cotton-Poly Blends: More durable, less shrinkage
• Double Weave: Heavier, ideal for competition
• Single Weave: Lightweight, good for beginners and hot climates

Conclusion

Choosing the right Judo gi size ensures comfort, mobility, and performance — whether you’re a beginner or a seasoned competitor. Always refer to the specific brand’s sizing chart, account for shrinkage, and prioritize both fit and function. A well-fitted gi helps you train better and move confidently on the mat.