what is the mm on a credit card
Credit card The size of most credit cards is 85.60 mm × 53.98 mm (​3 3⁄8 × ​2 1⁄8  inches) and rounded corners with a radius of 2.88–3.48 mm,[5] conforming to the ISO/IEC 7810 ID-1 standard, the same size as ATM cards and other payment cards, such as debit cards.[6]
Milli- Milli- (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10âˆ’3).[1] Proposed in 1793[2] and adopted in 1795, the prefix comes from the Latin mille, meaning "one thousand" (the Latin plural is milia). Since 1960, the prefix is part of the International System of Units (SI).