Measurements must be taken when you are fully erect to ensure the most accurate fit. Use a flexible measuring tape, or a piece of string and a ruler.
Most condom boxes list a "nominal width" (the width of the condom when laid flat). To find your corresponding size, divide your girth measurement by 3.14 (Pi) . 2. General Size Categories how to tell what size condoms to buy
Hold the measuring tape against your pubic bone at the base and measure to the very tip. Measurements must be taken when you are fully
Wrap the tape or string around the thickest part of your erect shaft. This is the most critical measurement for finding a secure fit. To find your corresponding size, divide your girth
While labels like "Standard" or "Large" can vary by brand, they generally fall into these ranges based on nominal width: How to Choose the Right Condom Size - Ro