The best place to measure your waist is at the narrowest part of your torso, which is usually located just above the belly button, between the bottom of your lowest ribs and the top of your hip bones. To find it precisely, you can lean to one side and notice where the skin folds—that's where the tape measure should be placed. The tape measure should be snug but not digging into your skin, kept level and parallel to the floor. Breathe out normally and take the measurement without holding your stomach in. This measurement point is typically the smallest circumference of your waist, often referred to as the natural waistline, and is the standard for health and clothing size measurements.