What is 40 millimeters to inches? The answer is that 40 mm equals 1.5748 inches.
How to convert 40 mm to inches? We know that one inch is equal to 25.4 millimeters. Therefore, to convert 40 millimeters to inches, we divide the millimeter value by 25.4. This gives us 40 mm ÷ 25.4 = 1.5748 inches. So, 40 mm is equal to 1.5748 inches.
See also: How to convert 40 inches to mm.