Buy a belt from an international brand and you’ll hit a wall of different sizing systems. US belts use inches, EU belts use centimeters, and UK sizing has its own quirks. This belt size conversion guide translates between them so you order the right size no matter where the brand is from.
The Core Difference: Inches vs Centimeters
The biggest divide is units. US and UK belts are typically sized in inches, while EU belts are sized in centimeters. Since 1 inch = 2.54 cm, a US size 36 belt is roughly an EU 90. Getting this conversion right is most of the battle.
Quick Conversion Chart
- US/UK 30 in → EU 75 cm
- US/UK 32 in → EU 80 cm
- US/UK 34 in → EU 85 cm
- US/UK 36 in → EU 90 cm
- US/UK 38 in → EU 95 cm
- US/UK 40 in → EU 100 cm
- US/UK 42 in → EU 105 cm
EU sizes round to the nearest 5 cm, so they line up neatly with even US inch sizes.
US and UK Sizing
US and UK belt sizing are largely the same — both in inches, both usually referencing the belt’s measurement to the middle hole. A US 34 and a UK 34 belt should fit the same. The main differences are in how brands label (some UK brands use S/M/L), not the underlying measurement.
The Universal Rule Still Applies
Whatever the system, the sizing logic doesn’t change: your belt size is about 1–2 inches (2.5–5 cm) larger than your bare waist, and you want to fasten at the middle hole. So a 32-inch waist needs a US 34 / EU 85 belt regardless of which country’s label you’re reading.
How to Avoid Conversion Mistakes
The foolproof method bypasses the systems entirely: measure a belt that fits you from the buckle fold to the hole you use, in both inches and centimeters. Then match that number to whatever the brand uses. This works no matter the country of origin.
Watch for “Total Length” Labeling
Some brands (especially EU) label by total strap length rather than buckle-to-middle-hole. A belt labeled “110 cm total” is not an EU size 110 — it’s the full length including the part that overlaps. Always check whether the number is the size or the total length, and look for the measurement to the middle hole.
When in Doubt, Size Up
As with all belt buying, if you’re between sizes after converting, round up. A belt that’s slightly long can have a hole punched; too short can’t be fixed. Use the chart above, confirm with a belt you own, and international belt shopping stops being a guessing game.
Recommended Belts
Looking to put this into practice? These XZQTIVE picks are a great place to start: