How to Size a Gi for Optimal Fit

When seeking out a gi, it is crucial to find one that fits you correctly. A large gi might feel overly baggy and disorganized, whereas a smaller one could feel restrictive and tight. Before you buy, it’s essential to have knowledge of your body measurements. You should then compare these measurements to the size chart to determine the right fit for you.

You need to take a few things into account when sizing a gi for optimal fit. The first is your height and weight. Different brands have different size charts, so it’s important to find the right brand and size chart that corresponds to your measurements.

Once you have the right size chart, follow the steps below to get an accurate measurement:

Measure Your Height and Weight

You can measure yourself at home or in front of a mirror while wearing your normal clothes. This way, you don’t risk having something loose on and not seeing how much room there is between your skin and the belt loops.

Find the Corresponding Number on the Size Chart

For example, if I am 5’9″ tall and weigh 170 lbs., my size would be 4-6 in the Gi Size Chart. If I’m 6’0″, my gi size would be 8-10. Keep in mind that some gi sizes may not exist for every brand or style of a gi. Also, keep in mind that more than one “size” will always be available for each model/brand. The reason why this happens is that they are made differently from manufacturer to manufacturer.

How to Size a Gi for Optimal Fit

One brand might have an extra inch added to their waist measurement so it’s easier to fit them into smaller pants, whereas another brand might add inches to make sure people aren’t too snug around the chest area. So if you’re a little on the short side, don’t worry about sizing up! You’ll still look great in your new gear.

You may also read: Jiu Jitsu – Gi Vs No Gi

Choose the Gi Size and Color Scheme that Best Suits Your Personality

If you like bright colors, go with those. Or maybe you prefer black-and-white? Whatever makes you feel comfortable and confident when wearing Gi Gear should be what you choose. Don’t get caught out by trying something offbeat or unusual just because everyone else is doing it. It can work for some but not all of us. Just keep things simple and classic. And remember, the more colorful your gi, the easier it will wash.

How to Size a Gi for Optimal Fit

Find the Right Fit

Finding the right fit for your Gi is essential to having a comfortable and functional Jiu-Jitsu practice. When you have a Gi that is too big or too small, it can make training more difficult and even dangerous.

Gi Sizing

There are three main factors in sizing a Gi: length, Width, and height. Each factor must be considered when selecting a Gi. Let’s take a look at each one.


This refers to the length from shoulder seam to hemline. The ideal length of a Gi should fall between mid-thigh and calf. A shorter Gi may not allow enough mobility to perform certain techniques, while a longer Gi could restrict movement. If your Gi falls below knee level, it needs to be lengthened. You should also consider if you want a baggy Gi or tight-fitting Gi. Bagginess is great for comfort but can make some moves more difficult than they need to be.

Tightness makes certain movements easier, like leg locks. It will depend on what type of grappler you are looking to train in this style, so I suggest trying out different lengths until you find something that works best with you.

How to Size a Gi for Optimal Fit


The width of the gi is important as well, especially when doing chokes. Choke attempts require a wider gi to prevent choking yourself. This is why people wear two-handers during practice because one hander’s grip would put too much pressure on their throat. If your hands were wide enough, it wouldn’t matter, and you could use them both. But if not, then you’d have to choose which side to choke from. You can also try putting tape around your wrist or forearm for added security while practicing chokes.

Read here: What is BJJ?

How to Size a Gi for Optimal Fit


Height matters in terms of how high up you place your wrists/forearms, so they don’t hit your collarbone. It also helps protect against elbows being driven into your windpipe by an opponent trying to leverage you. A taller person will naturally position themselves higher than a shorter person when making the same move. This means that even though someone has longer arms if they are short compared to their height, they’ll still be unable to reach as far up as a tall person.


You can use this size chart below to determine what size gi would fit you best based on your measurements and experience level. If you’re unsure which one works best for you, go with something larger until you feel comfortable with it.

This size chart will guide you to the sleeve length that’s right for you, as well as the length of the pants and gi jacket length measurements.

BJJ Gi Size Chart

How to Size a Gi for Optimal Fit
Source: Ju Jitsu Gi Size Guide : Martial Art Shop

What is the average Gi size for kids?

The average size for kids varies depending on the age group. A child’s body may grow faster than an adult’s, so keep that in mind when choosing a Gi. You should also take into consideration that there are bigger size kids.

Children under three years old choose a small-sized Gi because they have smaller bones and joints. This will help prevent injury if they fall or get knocked down during sparring matches. You can always go up to a medium-sized Gi once your child starts walking around and has more strength.

The Right Kids Gis

When picking out a large Gi, consider how much weight your kid weighs. If they are very active and move quickly, this should be avoided. It would not only make it difficult to move but also cause discomfort. On the other hand, if you are looking at purchasing one of those bulky gi sets with lots of padding, ensure that it fits comfortably over their head without causing any pressure points. Also, remember to buy them in sizes that will fit for several years as kids grow so that it does not become too tight on their shoulders when they start training again after a long break.

Brazilian Jiu-Jitsu Gi Sizes Versus Traditional Martial Art Sizes

Brazilian Jiu-Jitsu (BJJ) is a martial art that focuses on ground fighting and grappling. Unlike traditional martial arts, BJJ does not rely on kicks and punches. BJJ fighters use holds and maneuvers to control their opponents and eventually submit them.

One of the important pieces of equipment for a BJJ fighter is a Gi. The Gi, which is similar to a karate uniform, provides padding and protection for the fighter. A traditional martial arts Gi is made of a heavy material that provides the fighter with padding and protection. Traditional martial art Gis usually has a loose fit to allow for maximum movement, whereas BJJ Gis are cut more closely to the body to provide more support.

How to Size a Gi for Optimal Fit


In gi sizing, it is important to consider the wearer’s height, weight, and build. The gi should be snug but not tight, and the sleeves and pants should be long enough to cover the wearer’s wrists and ankles. By following these steps, you can ensure that you buy a gi that fits you perfectly and gives you the best performance in the dojo.

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