How Long Should a Business Suit Jacket Be?

For a traditional business suit, start with a jacket that covers the seat. The right hem should also look proportional with the trousers, which is why the rear and side views matter.

A thumb or knuckle check is convenient in a fitting room, but arm length varies. If two jackets look similar from the front, take a side photo of each with the same trousers and shoes.

Compare the jacket to your torso and legs

A shorter hem shows more trouser and can make a jacket look sportier. A longer hem can look more traditional. Compare where the hem meets the seat and whether the button and pockets still feel balanced relative to it.

Choose the best starting length off the rack

Try the short, regular and long variants in your chest size when available. Jacket shortening is limited by the positions of the pockets, front edges and vents. Ask a tailor how a proposed change would affect those details before committing.