What is 4 millimeters to inches? The answer is that 4 mm equals 0.1574 inches.
How to convert 4 mm to inches? We know that one inch is equal to 25.4 millimeters. Therefore, to convert 4 millimeters to inches, we divide the millimeter value by 25.4. This gives us 4 mm ÷ 25.4 = 0.1574 inches. So, 4 mm is equal to 0.1574 inches.
See also: How to convert 4 inches to mm.