Belt Size Converter
Convert waist measurement to US and EU belt size in inches and centimeters.
Includes men and women sizing guidance and tips for finding the right fit.
How Belt Size Is Determined
Belt sizing is one of the most misunderstood measurements in fashion — most people incorrectly buy a belt that matches their pants waist size, which results in a belt that is too short.
The fundamental rule:
Belt size = Pants waist size + 2 inches
If you wear size 34 pants, buy a size 36 belt.
This ensures the buckle prong passes through the middle hole (hole 3 of 5), leaving room to loosen or tighten as needed.
Why the +2 rule works:
Belts are measured from the buckle pin to the middle hole, not to the end. With 5 holes spaced 1 inch apart, the middle hole is 2 inches from either extreme:
Belt length = Waist measurement + 2 (to reach middle hole)
Measuring for a perfect fit:
- Thread a fabric tape measure through your pants loops exactly where a belt would sit
- Note the length where it overlaps comfortably — not tight, not loose
- Add 1–2 inches for the buckle and order that belt length
International belt sizing:
| US/UK Size | EU Size | Approximate |
|---|---|---|
| 30 | 75 | 30 inch waist |
| 32 | 80 | 32 inch waist |
| 34 | 85 | 34 inch waist |
| 36 | 90 | 36 inch waist |
| 38 | 95 | 38 inch waist |
| 40 | 100 | 40 inch waist |
Belt width by pant style:
- Formal trousers (narrow loops): 1–1.25 inch width
- Casual chinos or jeans: 1.25–1.5 inch width
- Work jeans and denim: 1.5–1.75 inch width
- Western style: 2 inch and above
The width must fit through the belt loops — measure the loop opening if unsure.