The pattern description should have an indication of the amount of ease in a garment. Essentially this is a compilation of sizing charts from a range of sources including the astm standard charts for misses and plus size women and several patternmaking manuals.

Size Chart
Body measurement chart for knitting. I include measurements for 9 sizes from a 28 62 chest adapted from the industry standard chart by the craft yarn council. Dont let your knitted projects go unworn because the measurements were off. Back waist length measure from the most prominent bone at base of neck to the natural waistline. The same applies to knitting. Before starting a new knitting pattern record your body measurements and those of friends and family for an accurate fit. For knitters unraveling a sweater is probably way worse than finding out you gained an inch in your hips.
Measure twice knit once. Center back neckto wrist with arm straight measure from back base of neck across shoulder and along arm to wrist. Heres a handy chart to record measurements for knitting patterns. The individual designers add ease to various sections of the garment to obtain the style they are creating. Its specifically intended for grading hand knitting patterns rather than sewn garments and follows knitting industry conventions at. They are all body measurements.
Knit it now sizing charts indicate the body measurements that are used to size our garments. Taking body measurements isnt fun for anyone. But youre going to work really hard on that knitted garment and you want it to fit perfectly. Chestbust measure around the fullest part of the chestbust. Do not draw the tape too tightly. Ive updated my old womens size chart to include more body measurements that will help you to make well fitting patterns for as many bodies as possible.
Body part my numbers numbers numbers chest waist hips cross.