12.7 mm to inches

Quick Answer Box What is 12.7 mm to Inches? 12.7 mm equals exactly 0.5 inches, or half an inch. This is one of the cleanest metric-to-imperial conversions because 12.7 mm is precisely half of 25.4 mm (the exact length of one inch). Millimeters belong to the metric system, used across most of the world, while…