How to Choose the Right BJJ Gi Size: Complete Sizing Guide for 2025
Understanding BJJ Gi Sizing
Choosing the right Brazilian Jiu-Jitsu gi size is crucial for comfort, mobility, and compliance with competition regulations. Unlike regular clothing, BJJ gis are sized using a letter system that corresponds to both height and weight ranges.
Kids' BJJ Gi Size Chart
Children's gis are sized based on height and age to ensure proper fit for growing athletes:
| Size | Height | Age | |
|---|---|---|---|
| M0000 | 3'3" - 3'6" | 99 - 106 cm | 5-6 |
| M000 | 3'6" - 3'8" | 106 - 113 cm | 6-7 |
| M00 | 3'8" - 3'11" | 113 - 120 cm | 7-8 |
| M0 | 3'11" - 4'2" | 120 - 127 cm | 8-9 |
| M1 | 4'2" - 4'4" | 127 - 134 cm | 9-10 |
| M2 | 4'4" - 4'7" | 134 - 141 cm | 10-11 |
| M3 | 4'7" - 4'10" | 141 - 148 cm | 11-12 |
| M4 | 4'10" - 5'1" | 148 - 155 cm | 12-13 |
Female BJJ Gi Size Chart
Women's gis are specifically cut to accommodate female body proportions with a more tapered fit through the torso and adjusted sleeve/pant lengths:
| Size | Weight | Height | ||
|---|---|---|---|---|
| F1 | 90 - 110 lb | 40 - 50 kg | 5'0" - 5'2" | 152 - 158 cm |
| F1L | 90 - 110 lb | 40 - 50 kg | 5'1" - 5'3" | 155 - 160 cm |
| F2 | 110 - 125 lb | 50 - 57 kg | 5'2" - 5'5" | 158 - 165 cm |
| F2C | 120 - 135 lb | 54 - 61 kg | 5'2" - 5'5" | 158 - 165 cm |
| F2L | 110 - 125 lb | 50 - 57 kg | 5'3" - 5'6" | 160 - 168 cm |
| F3 | 125 - 145 lb | 57 - 65 kg | 5'3" - 5'6" | 160 - 168 cm |
| F3C | 135 - 150 lb | 61 - 68 kg | 5'3" - 5'6" | 160 - 168 cm |
| F3L | 125 - 145 lb | 57 - 65 kg | 5'5" - 5'7" | 165 - 170 cm |
| F4 | 145 - 165 lb | 65 - 75 kg | 5'6" - 5'8" | 168 - 172 cm |
| F4L | 145 - 165 lb | 65 - 75 kg | 5'7" - 5'9" | 170 - 175 cm |
Adult BJJ Gi Size Chart
Use this comprehensive size chart to find your perfect fit based on your weight and height:
| Size | Weight | Height | ||
|---|---|---|---|---|
| A0 | 132 - 155 lb | 60 - 70 kg | 5'4" - 5'6" | 162 - 168 cm |
| A0L | 132 - 155 lb | 60 - 70 kg | 5'6" - 5'8" | 168 - 172 cm |
| A1 | 154 - 170 lb | 70 - 77 kg | 5'5" - 5'7" | 165 - 170 cm |
| A1L | 154 - 170 lb | 70 - 77 kg | 5'7" - 5'9" | 170 - 175 cm |
| A2S | 170 - 192 lb | 77 - 87 kg | 5'5" - 5'7" | 165 - 170 cm |
| A2 | 170 - 192 lb | 77 - 87 kg | 5'7" - 5'10" | 170 - 178 cm |
| A2H | 187 - 205 lb | 85 - 93 kg | 5'7" - 5'10" | 170 - 178 cm |
| A2L | 170 - 192 lb | 77 - 87 kg | 5'10" - 6'0" | 178 - 183 cm |
| A2XL | 170 - 192 lb | 77 - 87 kg | 6'0" - 6'4" | 183 - 193 cm |
| A3S | 192 - 220 lb | 87 - 100 kg | 5'7" - 5'10" | 170 - 178 cm |
| A3 | 192 - 220 lb | 87 - 100 kg | 5'10" - 6'2" | 178 - 188 cm |
| A3L | 192 - 220 lb | 87 - 100 kg | 6'0" - 6'4" | 183 - 193 cm |
| A4S | 220 - 253 lb | 100 - 115 kg | 5'10" - 6'2" | 178 - 188 cm |
| A4 | 220 - 253 lb | 100 - 115 kg | 6'1" - 6'4" | 185 - 193 cm |
| A4L | 220 - 253 lb | 100 - 115 kg | 6'2" - 6'5" | 188 - 195 cm |
| A5 | 253 - 287 lb | 115 - 130 kg | 6'2" - 6'5" | 188 - 195 cm |
| A6 | 287 - 320 lb | 130 - 145 kg | 6'4" - 6'7" | 192 - 200 cm |
Understanding Size Variations
The letter suffixes indicate specific fit variations:
- M (Minor/Kids): Designed specifically for children with age-appropriate proportions
- F (Female): Specifically cut for female body proportions with tapered torso fit
- C (Curvy): For female athletes with curvier builds at the same height
- S (Short): For athletes who are heavier but shorter
- L (Long): For taller athletes with lighter builds
- H (Heavy): For stockier builds at standard heights
- XL (Extra Long): For very tall athletes
Kids' Gi Sizing Tips
When choosing a gi for young athletes:
- Prioritize height over age: Children grow at different rates, so height is more reliable than age ranges
- Room to grow: Consider sizing up if your child is between sizes or growing quickly
- Shrinkage matters more: Kids' gis can shrink 2-5%, so factor this in if choosing a snug fit
- Competition requirements: For IBJJF kids' competitions, ensure sleeves reach the wrist and pants reach the ankle
- Comfort first: A gi that's too restrictive can discourage young athletes from training
Women's Gi Fit Differences
Female-specific gis (F-sizes) offer several key differences from unisex adult sizes:
- Tapered torso: More fitted through the waist and hips
- Adjusted sleeve length: Proportioned for typically shorter arm length
- Modified pant cut: Better fit through hips and thighs
- Shorter overall length: Designed for average female height ranges
Sizing Tips
Between sizes? Consider these factors:
- If you're between sizes, choose based on whether you're closer to the weight or height limit
- Account for shrinkage - most gis shrink 2-5% after the first wash
- For competition, ensure your gi meets IBJJF regulations with proper sleeve and pant length
- For training only, you have more flexibility in fit preference
- Women can choose between F-sizes for a tailored fit or A-sizes for a looser, unisex fit
- Teens transitioning from kids' sizes may fit better in A0 or F1 depending on build
How to Measure Yourself
For the most accurate sizing:
- Weight: Weigh yourself in the morning before eating (adults and older kids)
- Height: Stand against a wall without shoes and measure from floor to top of head
- Check both measurements: Use the chart to find where your weight and height intersect
- Consider your build: If you have a curvier build, look at C-sizes; if you're taller and leaner, consider L-sizes
- For kids: Measure height and use age as a secondary reference point
Shrinkage Considerations
Most BJJ gis are made from cotton and will shrink with washing. To minimize shrinkage:
- Wash in cold water
- Air dry instead of using a dryer
- If you need to shrink your gi, use warm water and tumble dry on low heat
- Pre-shrunk gis still shrink 1-3%, so account for this when sizing
Transitioning Between Size Categories
As athletes grow or change weight classes:
- Kids to Adult: M4 typically transitions to A0 or F1 around ages 13-14
- Female to Unisex: Some women prefer unisex A-sizes for a looser fit or if they're taller
- Weight changes: If you're cutting weight for competition, size for your competition weight, not walk-around weight
Still Unsure?
If you're between sizes or have questions about fit, please contact us. We're here to help you find the perfect gi for your training needs, whether you're shopping for yourself or a young athlete.