To get an accurate body measurement, always keep the tape parallel to the floor when measuring. Wear undergarments only; do not measure over clothing. For an accurate denim measurement, lay your favorite pair of jeans out on a flat surface to measure the rise and inseam.
 
Once you know your body measurements, consult the Size Charts and Fit Tips on the product pages to determine which size you should purchase.

For more help finding your perfect pair, check out our video fit guide:
FIT FUNDAMENTALS