A business card in the USA measures 2" x 3.5". In Europe, millimeters are used as a unit of measurement instead of inches. A European-sized business card measures 55mm x 85mm. This translates to approximately 2.17" x 3.35". If you want to order a European sized business card at 4OVER4.COM, you can easily do so. You would need to order it from our Mini Cards section, select "Custom" for size, and enter the 2.17" x 3.35".