Conversion formula

The conversion factor from millimeters to inches is 0.039370078740157, which means that 1 millimeter is equal to 0.039370078740157 inches:

1 mm = 0.039370078740157 in

To convert 318 millimeters into inches we have to multiply 318 by the conversion factor in order to get the length amount from millimeters to inches. We can also form a simple proportion to calculate the result:

1 mm → 0.039370078740157 in

318 mm → L_(in)

Solve the above proportion to obtain the length L in inches:

L_(in) = 318 mm × 0.039370078740157 in

L_(in) = 12.51968503937 in

The final result is:

318 mm → 12.51968503937 in

We conclude that 318 millimeters is equivalent to 12.51968503937 inches:

318 millimeters = 12.51968503937 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.079874213836478 × 318 millimeters.

Another way is saying that 318 millimeters is equal to 1 ÷ 0.079874213836478 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred eighteen millimeters is approximately twelve point five two inches:

318 mm ≅ 12.52 in

An alternative is also that one inch is approximately zero point zero eight times three hundred eighteen millimeters.

Conversion table

millimeters to inches chart

For quick reference purposes, below is the conversion table you can use to convert from millimeters to inches