Standard sizes (S/M/L) or even waist numbers (32, 34) vary wildly between brands due to "vanity sizing". For a perfect fit, use a cloth tape measure for the following:
: Measure from the crotch seam down the inner leg to where you want the trousers to end (usually the ankle bone). buy trousers online
: Measure around your natural waistline, usually just above the belly button. Keep the tape snug but breathable. Standard sizes (S/M/L) or even waist numbers (32,
The "cut" of the trouser changes how your measurements translate to comfort: Online shopping measurements: .. buy trousers online
: Crucial for those with a more athletic build; measure the widest part of your upper leg.