Waist
Lay your jeans flat and buttoned. Pull the front waistband upward so the top edge is flush with the back waistband, then measure end to end and multiply by two.
Use the same flat measurement method across all pairs so that fit comparisons are consistent.
Thigh
Measure straight across the leg one inch down from the crotch.
Front Rise
Start at the end of the crotch seam and measure straight up to the middle of the front waistband.
Back Rise
Start at the center of the back waistband and measure straight down to the crotch seam.
Knee
Knee measurements are taken exactly 14 inches down from the crotch seam.
Leg Opening
Measure across the bottom of the leg at the opening.