Use a flexible measuring tape
Measure around your waist or hips where you will wear the belt
Measure over the clothing you usually wear
Note the measurement in inches or centimeters
Add 2 inches to your waist size for a standard belt size
Choose a belt size that matches or is slightly larger than your measurement
Check the brand’s size chart before buying
If between sizes, pick the larger size
For an existing belt, measure from the buckle to the hole you use most
Match that measurement to the belt size
Consider whether the belt is for pants, dress wear, or casual wear