How to convert mm to inches?
One inch is 25.4 millimetres. To convert inches to millimetres, multiply the number by 25.4.
Suppose a length of 108 inches is given; what is the length in mm? 108x25.4 gives us 2743.2 millimetres.
Again, suppose a length of 10 inches is given; what is the length in mm? 10x25.4 gives us 254 millimetres.
To convert mm to inches, divide the number by 25.4.