Boxing gloves are sold by ounce, and the ounce is padding weight, not hand size. What you train for matters more than what you weigh: the same person needs different gloves for the heavy bag, for sparring and for a sanctioned bout. Enter your weight, pick your purpose, and we will give you the ounce plus the reason behind it.
How boxing glove sizing works
Boxing gloves are sold by the ounce, and almost everyone reads that number wrong the first time. The ounce is the weight of the glove. In practice that means how much padding sits between your knuckles and whatever you are about to hit. It is not the size of the hole your hand goes into. A 16 oz glove is not a bigger glove for a bigger hand, it is a more padded glove, and two 16 oz gloves from different makers can fit two completely different hands.
That is why this page asks two separate questions. The ounce comes from your body weight and, far more importantly, from what you are training for. The fit comes from your hand circumference, which the better brands publish their own chart for. Get the ounce wrong and you are training with the wrong tool. Get the hand size wrong and the glove is simply uncomfortable, which you will discover in about four minutes.
Purpose matters more than body weight
Most glove charts online are a single column of body weights, which quietly implies there is one right glove for you. There is not. The same person correctly owns different gloves for different work, and the reason is not comfort, it is who the padding is protecting.
On the heavy bag, the padding protects you, so bag gloves run lighter and firmer. In sparring, the padding protects the person you are hitting, so sparring gloves run heavier and softer, and this is the one place where the honest answer is almost always 16 oz regardless of what you weigh. In competition, the glove weight is not your decision at all: it is written in the rulebook of whichever body sanctions the bout.
The formula
bag or training oz = weight band lookup
sparring oz = weight band, with 16 oz the standard adult answer
competition oz = 10 if body weight ≤ 139 lb, otherwise 12
hand size = hand circumference matched to the published range
The weight bands run under 100 lb, 100 to 125, 126 to 150, 151 to 175, 176 to 200, and over 200. The bag and training columns are a convention rather than a standard, which is why published charts disagree with each other by a size in places. The competition line is the USA Boxing rule as of July 2026 and is a genuine rule, not a suggestion. Hand circumference is measured around the knuckles with the hand open and the thumb left out.
Worked example
Say you weigh 165 lb and you are buying gloves to spar in, and your hand measures 7.75 inches around the knuckles. At 165 lb you are in the 151 to 175 lb band, where the bag glove would be 14 oz. Because you are sparring, the answer moves to 16 oz: the extra padding is for your partner, not for you. Your 7.75 inch hand lands in the Large to XL hand size, which is a separate choice from the ounce and decides how the glove actually fits. If the same person were buying purely for bag work, 14 oz would be right, and if they were competing as an amateur, the rulebook would put them in 12 oz because they are above 139 lb. One boxer, three correct answers.
Why the charts disagree with each other
Look up glove sizing at three different retailers and you will get three different tables. That is not sloppiness, it is the absence of a standard. FightCamp puts a 125 to 150 lb boxer on 12 oz for the bag; TITLE puts a 101 to 150 lb boxer on 10 to 12 oz for the same work. Both are defensible, because the number is a convention that grew out of gym practice rather than a specification anyone published. We use the middle of the published range and tell you when you are near an edge.
Two places where the disagreement stops mattering, because someone else decides for you. The first is your gym: many require 16 oz for all adult sparring whatever the boxer weighs, and a few require 18 oz for the heavier ones. The second is competition, where the sanctioning body sets the weight, the Masters division boxes in 16 oz, and events routinely require an approved glove model that is supplied or inspected on the night. In both cases their rule beats this page, and it is worth one message to the coach before you spend the money.
Wraps change the fit, so wrap before you try
Hand wraps are not an accessory. They support the small bones across the back of your hand and the wrist, and every boxer wears them. They also take up real room: a standard 180 inch wrap puts several layers of cotton across your knuckles and around your wrist, which is exactly where a glove is tightest. A glove that fits perfectly on a bare hand will be too small once you wrap it properly, and a glove bought a size up to allow for wraps will slop around if you ever skip them.
So measure your hand wrapped if you always wrap, and try gloves on wrapped if you get the chance. If you are ordering online and cannot try anything, size the hand compartment for the wrapped hand and accept that the glove will feel roomy on a bare one. That is the right way round to be wrong.
Frequently asked questions
What size boxing gloves should I get?
For most adults starting out, 14 oz or 16 oz covers almost everything. If you are under about 150 lb, 14 oz is a comfortable all-rounder; above that, 16 oz. The number only changes meaningfully when your purpose changes: lighter for the heavy bag, heavier for sparring, and a weight fixed by the rulebook for competition. When in doubt, buy the 16 oz, because a glove that is slightly too padded costs you nothing but a glove that is too thin costs you knuckles.
Does the ounce number mean the glove is bigger?
No, and this is the single most common misunderstanding about boxing gloves. The ounce is the weight of the glove, which in practice means how much padding sits between your knuckles and whatever you hit. It is not the size of the hand compartment. Two 16 oz gloves from different brands can fit two very different hands, which is why the good brands publish a separate hand circumference chart.
Are 16 oz gloves too big for a beginner?
No. 16 oz is the most common glove in any gym and the safest default for a beginner, because more padding is more protection for hands that have not conditioned yet. The heavier glove also builds shoulder endurance and makes your guard honest. The only real downside is that bag work feels slower, which is a training benefit more often than a problem.
What size gloves do I need for sparring?
16 oz for most adults, and the important part is why: sparring gloves protect the person you are hitting, not you. That is also why your gym gets the final say. Many gyms require 16 oz for all adult sparring regardless of body weight, and a few require 18 oz for heavier boxers. Ask before you buy, because the gym rule beats any chart including ours.
What ounce gloves are used in amateur competition?
It is a rule, not a preference. Under USA Boxing rules as of July 2026, boxers at 139 lb and under compete in 10 oz gloves and boxers above 139 lb compete in 12 oz, with the Masters division (age 41 and up) in 16 oz. Other federations set their own numbers, and competition gloves usually have to be approved models supplied or checked by the event. Confirm with your own sanctioning body before you buy anything to fight in.
What is the difference between 12 oz and 16 oz gloves?
About four ounces of padding per hand, which sounds trivial and is not. The 16 oz glove absorbs more, hits softer, tires your shoulders faster and protects your partner better. The 12 oz glove is quicker, gives you more feedback on the bag and is closer to what you would compete in. Most people who train seriously end up owning both, using the lighter pair on the bag and the heavier pair with a human being.
How do I measure my hand for boxing gloves?
Wrap a soft tape around your dominant hand at the widest point across the knuckles, with your hand open and the thumb left out. That circumference is what brands map to their hand sizes. Measure with your wraps on if you always wrap, because wraps add real bulk. No tape? Wrap a piece of string around your knuckles, mark where it overlaps, and lay it flat against a ruler.
Do I need different gloves for the bag and for sparring?
Eventually, yes, though one 16 oz pair will get you started on both. Dedicated bag gloves are lighter and firmer because they only have to protect you. Sparring gloves are heavier and softer because they have to protect someone else, and using a broken-down bag glove for sparring is how training partners get hurt. If you can only own one pair, own sparring gloves and accept slower bag work.