What is 4.5 millimeters to inches? The answer is that 4.5 mm equals 0.1771 inches.
How to convert 4.5 mm to inches? We know that one inch is equal to 25.4 millimeters. Therefore, to convert 4.5 millimeters to inches, we divide the millimeter value by 25.4. This gives us 4.5 mm ÷ 25.4 = 0.1771 inches. So, 4.5 mm is equal to 0.1771 inches.
See also: How to convert 4.5 inches to mm.