How to measure a pant

Waist:
Measure around waist, over body (not over shirt or slacks) at the height you normally wear your pants.

Inseam
Take a pair of pants that fits you well. Measure from the crotch seam to the bottom of the pants. Number of inches (to nearest 1/2") = inseam length. Add 1/2" for cotton pants to allow for shrinkage.

Outseam:
Measure from top of pant waistband down side seam of pant to bottom of pants.