BJJ Gi Size Chart

BJJ Gi sizes are set by height and weight together, not by a single measurement. Men's sizes run A0 to A4, women's F1 to F4, and kids' M0 to M4. The letters follow the international BJJ convention: A for adult, F for female, and M for mirim, Portuguese for “little”, so a kids' M2 is not a medium. Find your height along the top of the chart and your weight down the side — the cell where they meet is your size. As a rough guide, A0 fits up to about 155 lbs, A1 covers 126–185 lbs, A2 is the most ordered adult size at 156–225 lbs, A3 covers 171–245 lbs, and A4 covers 186–270 lbs. Gimakx Gis are made from pre-shrunk pearl weave, so expect only a small 1–3% natural shrinkage after the first few washes with cold washing and hang drying. If you fall between two sizes, size up for a looser competition fit or down for a closer cut.

Quick reference

Ranges overlap because sizing depends on height and weight together — use the full charts below to find where your two measurements meet.

How to read the chart

1. Choose your chartSelect the men's, women's or kids' tab below. Each is cut to its own pattern rather than being a scaled-down men's size.
2. Find your height along the topHeights run left to right across the header row — 5'1″ to 6'5″ on the men's chart.
3. Find your weight down the leftWeights run top to bottom down the first column of the same chart.
4. Read the cell where they meetThat cell is your size. Sizing uses both measurements together, which is why two people of the same height can wear different sizes.
5. Check for an overlapIf your two measurements land you in more than one size, follow the between-sizes steps below.

Full size charts

Men's, women's and kids' sizing, each drafted to its own pattern.

How to choose if you are between sizes

1. Confirm both measurementsCheck your height and weight against the chart again — a size that looks borderline on one measurement is often settled by the other.
2. Size up for a looser fitChoose the larger size if you prefer a looser competition fit, train in a hot climate and want more airflow, or expect to gain a little weight.
3. Size down for a closer cutChoose the smaller size if you want a more tailored cut that gives opponents less fabric to grip.
4. Do not size up for shrinkage aloneGimakx Gis are cut from pre-shrunk pearl weave, so expect only 1–3% natural shrinkage after the first few washes. Sizing up purely to allow for it is rarely necessary.

Caring for the fit

Wash cold and hang dry rather than tumble drying. That keeps shrinkage inside the 1–3% range and protects the pearl weave. Heavier fabrics such as 500 GSM simply need longer to dry. For how fabric weight affects fit and feel, see our guide to 380, 450 and 500 GSM.

Ordering mixed sizes for an academy

A single design can be split across any mix of sizes. An academy ordering the minimum of 10 units per design can take a spread of A1 to A3, or combine adult and kids sizes, without raising the minimum. If you are outfitting a new academy, the partnership program guide explains how the first order works.

Frequently asked questions

What size BJJ Gi am I?

Find your height along the top of the size chart and your weight down the side; the cell where they meet is your size. Sizing uses both measurements together, which is why two people of the same height can wear different sizes. Men's sizes run A0 to A4, women's F1 to F4, and kids' M0 to M4.

What is the most common BJJ Gi size?

A2 is the most ordered adult size. It covers roughly 156 to 225 lbs across heights from about 5'1" to 6'3", which is why it sits in the middle of the men's chart and accounts for the largest share of academy orders.

Do BJJ Gis shrink after washing?

Gimakx pre-shrunk Gis are made from a 60% cotton / 40% polyester pearl weave, shrunk during manufacturing, though a small 1-3% natural shrinkage can still occur after the first few washes. Wash cold and hang dry rather than tumble drying to keep shrinkage to that range. Our 100% natural cotton Gis are not pre-shrunk, so expect more natural shrinkage on those.

What if I am between two BJJ Gi sizes?

Size up if you prefer a looser competition fit or expect the Gi to shrink slightly with washing, and size down if you want a closer, more tailored cut. Because Gimakx Gis are pre-shrunk, sizing up purely to allow for shrinkage is rarely necessary.

Do you make women's and kids' BJJ Gis?

Yes. Women's Gis are cut F1 to F4 and kids' M0 to M4, both with their own size charts rather than being scaled-down men's patterns. All sizes carry the same MOQ of 10 units per design, and mixed sizes within one design are accepted.

Can we order mixed sizes in one academy order?

Yes. A single design can be split across any mix of sizes, so an academy ordering 10 Gis can take a spread of A1 to A3, or combine adult and kids sizes, without raising the minimum order quantity.