Here is something we hear a lot. A groom orders his suit, tries it on at home, and everything seems right. The jacket buttons without pulling. The shoulders sit where they should. The sleeves are close enough. Then the photos come back from the engagement shoot or the rehearsal dinner, and something looks off. He cannot quite say what it is, but the suit does not look the way it did in his head.
Very often, the answer is the length of the jacket.
It is the fit detail people check last, and the one that changes the whole outline of a suit. A jacket can fit your chest perfectly and still make you look shorter, heavier or a little boyish if the hem lands in the wrong place. So before you buy a suit for your wedding, or for your groomsmen, it is worth spending five minutes on this.
So How Long Should a Suit Jacket Be?
The simple version: a classic suit jacket should be just long enough to cover the curve of your seat. Not much shorter, not much longer. When you stand with your arms relaxed at your sides, the hem usually lands somewhere around the middle of your hand.
That is the rule tailors have used for a long time, and it still holds up. Trends move the hem up or down a little every decade, but the reason behind the rule does not change. A jacket that ends at the bottom of your seat splits your body into a pleasing balance of upper body and legs. Move the hem too far in either direction and that balance starts to slip.
Four Lengths, One Man
The clearest way to understand jacket length is to picture the same man, standing sideways, in four versions of the same grey suit.
In the first, the jacket ends well above the bottom of his seat. It looks like the jacket shrank in the wash. His torso looks cut off and the suit feels a size too small, even though the chest fits. If you remember the very slim, very short suits that were everywhere in the 2010s, this is that look, and it is the one that tends to date wedding photos fastest.
In the second, the jacket is a little shorter than traditional but still covers most of the seat. This is what many brands now call a modern length. It looks clean and current, and it works well on slimmer men and at relaxed daytime weddings.
In the third, the hem stops right where his seat meets the back of his leg. Nothing looks forced. His legs and upper body are in proportion, and the suit looks right from the front, the side and the back. This is the balanced length most tailors aim for.
In the fourth, the jacket drops well below his seat toward his thigh. Suddenly the suit looks heavy, his legs look shorter, and the whole outfit reads as borrowed. This is the problem we see most often, usually when someone sizes up to fit a broad chest and the extra length comes along with it.
The lesson from those four pictures is not to chase the shortest jacket you can get away with. It is to find the length that keeps your proportions in balance.
How to Check It Yourself in Front of a Mirror
You do not need a tailor to get a good first answer. Put the jacket on, stand in front of a full length mirror, and if you can, ask someone to take a photo of you from the side. Side photos are honest in a way mirrors are not.
Then try these three checks:
- Look at your seat. From the side, the jacket should cover the curve of your seat. If you can see the seat of your trousers below the hem, the jacket is short. If the hem keeps going toward your thigh, it is long.
- Let your arms hang. With your arms relaxed, a balanced hem usually lands around the middle of your hand, often near the thumb knuckle. Arm length varies from person to person, so use this as a second opinion rather than the final word.
- Do the half measurement. Measure from the base of your collar at the back of your neck down to the floor. A balanced jacket length is roughly half of that number. This one is especially useful when you are shopping online and cannot try anything on.
If two of the three checks agree, you can trust the result.
Why It Matters More on Your Wedding Day
On an ordinary workday, nobody looks at your jacket from the side for very long. A wedding is the opposite. During the ceremony you spend most of the vows in profile, facing your partner, with guests and a photographer looking at you from the side. Whatever your jacket is doing, it will be in those pictures.
You will also be standing for a long time, often with your hands clasped in front of you, which pulls the jacket up slightly. A length that felt fine for two minutes in your bedroom can creep shorter over an hour at the altar.
Then there is the lineup. When five groomsmen of different heights stand next to each other in the same suit, small differences become obvious. One friend in a jacket that falls past his seat can stand out more than a mismatched tie. And if you are wearing a three piece suit, the jacket needs to fully cover the bottom of the vest when it is buttoned. A short jacket lets the vest peek out under the button and breaks the clean front line.
Height, Build and the Size Chart Problem
Here is something many people do not realize when they buy a ready to wear suit. Jackets are sized by chest, and the length grows a little with each size. That system works well for a lot of men. It works less well if your height and your chest do not follow the average pattern.
If you are somewhere around 5 ft 8 in to 6 ft 0 in, a Regular length jacket is designed with you in mind, and choosing by chest size will usually give you a balanced length.
If you are shorter than that, a Regular jacket can run long, especially in larger sizes. You will often look better in a jacket at the shorter end of the balanced range, because it shows more of your legs.
If you are taller, especially over about 6 ft 1 in, a Regular jacket may sit closer to that modern short length, and the sleeves may feel short too. If a Regular jacket would end above your seat, it is worth looking at a Long size or a made to measure jacket instead.
Athletic builds have their own version of this. A broad chest pushes you into a bigger size, and a bigger size brings extra length you may not need. If you are average height with a big chest, look carefully at the jacket length before you order.
Checking Our Jacket Length Before You Order
We want to be upfront about this. Our ready to wear jackets come in Regular length only, in sizes 34R to 54R. The jacket length for every size is listed in our Size Guide, from 28.5 inches (72.5 cm) for a 34R up to 32.3 inches (82 cm) for a 54R.
The easiest way to know whether that will work for you is to find a jacket you already own and like. Lay it flat, measure the back length the way our How to Measure guide shows, and compare it with the length for the size your chest points to. If the two numbers are within about an inch, you are in good shape. If they are further apart, send us a note before ordering and we will help you figure out whether a Regular jacket makes sense or whether made to measure is the better route.
Can a Tailor Fix the Length Later?
This comes up constantly in menswear forums, and the honest answer is: a little, but not much.
Many tailors can shorten a jacket by about an inch. Beyond that, the pockets and the bottom button start to sit too low on the jacket, and it begins to look out of proportion. Making a jacket longer is even harder, because there is rarely enough spare fabric in the hem to work with. Sleeves, trouser hems and taking in the waist are everyday jobs for a tailor. Jacket length is not, which is exactly why it is worth getting it right at the start.
If you do plan alterations, give yourself at least two to three weeks before the wedding so there is time for a second fitting.
A Few Questions People Often Ask
Should a suit jacket cover your butt? For a classic look, yes. The hem should cover the curve of your seat. A modern short jacket can sit right at the bottom of the seat, but it should not leave it fully exposed.
Are shorter suit jackets still in style? Slightly shorter jackets are still common. The very short look from the slim suit era has faded, though, and for wedding photos you want to enjoy in twenty years, a balanced length is the safer choice.
What length works best for a shorter guy? Aim for a jacket that just covers your seat, at the shorter end of the balanced range. Extra length is the thing to avoid, because it makes your legs look shorter.
What does back length mean? It is the measurement from the base of the collar seam at the back of your neck down to the bottom hem. It is the most reliable way to compare jacket lengths between brands.
In the end, a good suit is less about trends and more about proportion. If your jacket covers your seat, lands around the middle of your hand and lines up nicely with the rest of your wedding party, you will look relaxed and like yourself in every photo. That is really the whole point.
If you are still deciding, take a look at our three piece wedding suits, or get in touch with your height, chest measurement and the back length of a jacket you like. We are happy to help you work it out.