Belts are an easy, frequently-needed gift — but the sizing trips people up because it doesn't match pant size the way you'd expect.

The Simple Formula

Belt size is typically 2 inches larger than pant waist size. So someone who wears a 32-inch pant typically needs a 34-inch belt. This accounts for the belt wrapping around the outside of the waistband rather than sitting flush against the body.

Belt Size Conversion Chart

Pant Waist (in) Belt Size (in) EU Belt (cm)
30 32 81
32 34 86
34 36 91
36 38 97
38 40 102
40 42 107

The Most Reliable Method: Measure an Existing Belt

If you have access to a belt they already wear, measure from the buckle to the hole they use most often — that's their actual size, no formula required. This is more reliable than guessing from pant size, since fit preference (worn high or low on the hips) varies by person.

👔 Add it to their profileBelt size is a quick addition to anyone's Size Notes profile — useful not just for belts, but as a cross-check when buying pants or trousers in an unfamiliar brand.

The Bottom Line

When buying a belt as a gift, add 2 inches to known pant size, or better yet, measure an existing belt directly. Most belts have a few adjustment holes built in, so being one size off rarely ruins the gift.