Size 12 in EU can refer to different things depending on the context. Here are some possible conversions:

• Mens shoes: According to, size 12 in the US corresponds to size 46 in the EU.
• Womens clothes: According to, a US size 12 is approximately a UK size 16, which corresponds to a waist of 33-34 inches and a bust of 41-42 inches. However, this conversion is not specific to EU sizes.
• Womens shoes: According to, a UK size 12 for womens shoes corresponds to a EU size 45.
• Mens shoes (alternative conversion): According to, a UK size 12 for mens shoes corresponds to a EU size 46 or 47, depending on the exact dimensions of the shoe.
• General conversion: provides a conversion chart for shoe sizes that includes US, UK, EU, and inches. According to this chart, a mens size 12 corresponds to a EU size 46, and a womens size 12 corresponds to a EU size 43.5.