Buying your first women’s BJJ gi and staring at sizes like A1F and A2 is enough to make anyone close the tab. The system looks nothing like normal clothing, the letters and numbers feel random, and a gi that runs wrong either swims on you or digs into your shoulders by week two. This guide breaks down how women’s gi sizing actually works, so you order once and get it right.
How BJJ gi sizing works
BJJ gis use the A-system, where A stands for adult and the number is the size, running from A0 at the smallest up through A1, A2, A3 and beyond. The number tracks with height first and weight second, which is what trips people up, because most of us are used to shopping by weight alone. An F after the size, like A1F or A2F, means the gi is cut for a female body, with a shorter torso, narrower shoulders, and room through the hip instead of a straight box cut.
Women’s gi sizes vs unisex and men’s
A women’s cut is not just a shrunken men’s gi, and that’s the part most beginners learn the hard way. Brands that only sell unisex expect you to size down and live with a jacket that’s long in the sleeve and tight across the hip. A true women’s gi shortens the sleeves and pants, takes in the waist, and adds shape through the hip and chest, so it moves with you instead of bunching up. When a brand offers both, the women’s cut is almost always the better call for a female frame.
How to measure yourself before ordering
Start with height and weight, because together they put you in the right ballpark for nearly every brand. Then factor in your build. If you’re lean and tall, lean toward the size that matches your height. If you carry more muscle or curve, give weight more pull in the decision and round up when you’re between two. Keep a tape measure handy for one extra check, since your wrist-to-wrist reach and your inseam tell you whether the sleeves and pants will land where the IBJJF wants them.
Women’s BJJ gi size chart, a starting point
Every brand runs a little different, so treat this as a starting point and always open the maker’s own chart before you buy. As a rough guide for women’s F sizing:
| Size | Height | Weight |
|---|---|---|
| A0F | 5’0″ – 5’3″ | 95 – 120 lb |
| A1F | 5’2″ – 5’6″ | 115 – 145 lb |
| A2F | 5’5″ – 5’9″ | 140 – 170 lb |
| A3F | 5’8″ – 6’0″ | 165 – 195 lb |
If you land between two rows, the right pick comes down to how the gi is built and how much it’ll shrink, which is the next thing to sort out.
Shrinkage and what to do between sizes
Most BJJ gis are cotton and they shrink, some of them a lot, especially the heavier weaves on a hot wash and a tumble dry. A gi that fits perfectly out of the bag can turn snug after a few cycles, so a brand-new gi that feels very slightly long is usually right, because it settles in. When you’re stuck between two sizes the honest answer depends on the fabric. A pre-shrunk or ripstop gi you can take true to size, while a raw cotton weave you might size up and let it shrink into place. Wash cold and hang dry if you want to keep shrinkage to a minimum.
Fit by body type
Petite or short in the torso? The F cut exists for you, and you’ll feel the difference most in the sleeve and pant length. Tall? Watch the inseam and reach, because a size that matches your weight can leave you in high-water pants the ref won’t love. Curvy through the hip and chest? Reach for a women’s cut with real shaping rather than sizing up a straight gi, since going up just to fit your hips leaves the shoulders drowning you. There’s no perfect body for a gi, only the cut that’s built for yours.
Does the gi need to be IBJJF legal?
If you compete, yes, and fit is part of the rule. The IBJJF measures sleeve and pant length with your arm extended, and a gi that’s too short fails the check at the table. That’s why length matters as much as width when you size, and why a women’s cut built to the right proportions saves you from a bad surprise on competition morning. For training only, fit is about comfort and you’ve got far more freedom.
Once you’ve nailed your size, the next call is which gi to actually buy, and our guide to the best women’s BJJ gis walks through the top picks.
Frequently asked questions
What does the F mean in A1F or A2F?
It marks a female cut, with shorter sleeves and pants and shaping through the waist and hip.
Should I size up or down in a BJJ gi?
It depends on the fabric. Pre-shrunk and ripstop gis you can buy true to size, while raw cotton you can size up to allow for shrinkage. When in doubt, follow the brand’s own chart.
Do women really need a women’s gi?
You don’t strictly need one to train, and plenty of women start in a unisex gi. But a women’s cut fits the female frame far better, with sleeves and pants that aren’t too long and a waist that isn’t boxy, so most women who switch don’t go back. Think of it as a comfort and mobility upgrade more than a hard requirement.
How much do BJJ gis shrink?
Cotton gis can shrink noticeably on hot washes and much less on cold. Wash cold and hang dry to keep it minimal.
What size am I if I’m between two?
Go by fabric and build. Heavier raw cotton, size up. Pre-shrunk or a leaner build, stay true. And check the specific brand’s chart, because they really do vary.
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