Convert length in one place
Enter a value in any unit and this converter instantly shows the equivalent in millimeters, centimeters, meters, inches, feet, and yards. It uses the exact international definitions, so 1 inch is precisely 25.4 mm and 1 foot is 304.8 mm. No rounding until the final display.
It is handy for schoolwork, sewing and crafts, woodworking, and any time a measurement is given in the "wrong" unit for what you are doing. Once you have the number, open the actual-size ruler or the CM ruler to see the length at true scale on your screen.
Quick reference
1 cm = 10 mm = 0.3937 in. 1 inch = 2.54 cm. 1 foot = 12 inches = 30.48 cm. 1 meter = 100 cm = 39.37 inches. 1 yard = 3 feet = 0.9144 m.