Belt Size Calculator
Your belt size isn't your waist size — it's usually two inches larger. Enter your trouser waist to get it right.
Find your belt size
How to measure
Use your trouser waist
Take the waist size on your trousers (the tag number), not your body measurement.
Add about two inches
Belts are measured to the middle hole, which sits roughly two inches above the trouser waist.
Or measure a belt you own
Measure from where the leather meets the buckle to the hole you use — that length is your belt size.
Sizing up?
Most belts have five holes spanning ~10 cm, so a size near the middle gives the most adjustment.
Classic full-grain belts in a full size range.
View on Amazon →Micro-adjust belts with no fixed holes.
View on Amazon →Frequently asked questions
What belt size for a 32 inch waist?
A 34-inch belt (about 85 cm), since belt size is usually your trouser waist plus two inches.
Is belt size the same as waist size?
No — a belt is normally two inches larger than your trouser waist so the middle hole sits comfortably.
How this is calculated
Belt size is taken as your trouser waist size plus about two inches, which lands the middle hole at a comfortable fit. The EU equivalent is that figure in centimetres. The most reliable method of all is to measure a belt that currently fits, from the buckle fold to the hole you use.
Sources: Standard belt-sizing rule (trouser waist + 2 inches), cross-checked retailer charts 2026.