Round up to the nearest half inch or centimeter.

Pull it up against your skin but don’t pull it too tight.

Make sure the tape measure goes over the top of your shoulder and along your elbow to get the full length. If you need to take this measurement yourself, try taping the end of the measuring tape in the middle of your back and then gently guiding it down your arm. In a pinch, you could measure from the middle of your chest instead, though the sizing may be off slightly.

If you usually wear low-rise pants, you can also take a measurement where your pants normally fall. Keep the tape measure a little loose by placing a finger between it and your waist.

Then, measure the height from your natural waist to your hip measurement. The widest part of the hips is different on everyone, so it may take a couple of tries to figure out the correct placement for the measuring tape. [6] X Expert Source Andrea BeaulieuProfessional Tailor & Fashion Designer Expert Interview. 1 May 2020.

Some places may also want an ankle measurement.

For crotch depth, sit down on a flat surface. Measure from your waist down to the surface.

Another option is to take a pair of pants that fits your length well and measure the inseam on them instead.

If you’re having trouble with this measurement, ask a friend to help.

For U. S. bra sizes, add 4 inches if the number is even and 5 if it’s odd, and that will give you your band size. If you measured 34. 5, you round up to 35 and then add 5 inches to make it 40. Subtract your underbust measurement from your bust measurement to get your cup size: AA = 1/2" A = 1" B = 2" C = 3" D = 4" E/DD (US) or DD (UK) = 5" F/DDD (US) or E (UK) = 6" G (US) or F (UK) = 7" H (US) or FF (UK) = 8" I (US) or G (UK) = 9" J (US) or GG (UK) = 10"

Measure to where you want the sleeve to fall.

If you normally wear pants lower, take a measurement there, too, just in case.

Check in a mirror to see if the tape measure is flat against you. Stand with your legs about 6 inches (15. 2 cm) apart.

You can also take a crotch length measurement by running the tape measure from your natural waist in front, through your legs, and to your natural waist in back.

You can also take a measurement from a pair of pants that fits you well in length. If you wear heels sometimes, you may want to take a second measurement if you’d like to wear your pants longer then. [18] X Research source If you don’t have anyone to help you, you can take your inseam by measuring a pair of pants that fit the way you like. Lay the pants out flat, then measure from the center crotch down the pant leg, along the inseam. [19] X Expert Source Andrea BeaulieuProfessional Tailor & Fashion Designer Expert Interview. 1 May 2020.