66mm to inches

Quick Answer: 66mm equals 2.60 inches (2.5984 in exactly). On a ruler, that’s about 2 5/8 inches, and 2 19/32 inches if you need the closer fraction. In centimeters, 66mm is 6.6 cm. That’s a little smaller than the diameter of a tennis ball. If you are converting 66mm to inches for a part, a…