You’ll notice the sizes for jackets will have numbers like 40L or 38R. That number comes from your chest measurement. Also, when you buy a dress shirt, you need to know your chest size.
How to measure your chest
- Wrap the tape measure under your armpits, around the fullest part of your chest.
- The measuring tape should be snug and not so tight that it constricts breathing, or so loose that it slides down.
- Don’t puff out or flex your chest. Just stand normally.
The letter in off-the-shelf jacket measurements corresponds to your height. If you’re between 5’7′ and and 6′ you’re a Regular(R). If you’re between 6’1′-6’3 you’re a Long(L).
How to measure your neck
- Wrap the tape measure around the lower part of your neck. It should be about an inch below your Adam’s Apple.
- For a comfortable fit, place 2 fingers between the tape and your neck. Round up to the next 1/2″.
How to measure your sleeve length
- Measure from the shoulder joint to the wrist bone.
How to measure your waist
- Measure around your waist at about navel level.
- Put a finger between your body and the tape measure to ensure maximum comfort.
How to measure your inside leg
- Remove your shoes.
- Measure your inner leg from the lowest part of your crotch to your foot.
There are ways to measure your feet at home, but the easiest way is to use the Brannock Device (that silver and black thing you see at shoe stores). Don’t just measure the length of your foot, but also the width. Measure your feet at the end of the day when they’ll be at their biggest and most swollen.
Hat sizes come in numbers like 7 and 7 3/4. To work out what your hat size is, you first need to measure your head in inches.
How to measure your hat size
- Loop the tape measure around your head about an inch and a half above the ears. Write down the measurement.
- Now convert your measurement into your appropriate hat size using this chart.