To convert 18mm to inches, you can use the conversion factor of 1 inch equals 25.4mm. Therefore, 18mm is approximately 0.71 inches (18 mm ÷ 25.4 mm/inch). On a ruler, you would find 0.71 inches , 20 millimeters is approximately 0.7874 inches. To convert millimeters to inches, you can use the conversion factor of 1 inch being equal to 25.4 millimeters. Therefore, 20 mm divided by 25.4 mm , To convert millimeters to inches, you can divide the number of millimeters by 25.4, since there are 25.4 millimeters in an inch. Therefore, 95 mm ÷ 25.4 mm/inch ≈ 3.74 inches., 14mm somcket is approx a 9/16th socket. 9/16 inches = 14.2875 mm Direct Conversion Formula 14 mm* 1 in 25.4 mm = 0.5511811024 in or 9/16 30 mm socket, 7/16 inch is 11.1 (11.1125) mmHow many inches is 18.55 mm? 18.55 mm is less than one inch--about 0.73 of an inch. Since we usually divide an inch into halves, fourths, eights, and sixteenths, this , What is the smallest length marked on a 12 inch ruler? A millimeter, as almost every 12 inch ruler has centimeters and millimeters on the opposite side of where inches are marked..