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 1 millimeter into inches we have to multiply 1 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

1 mm → L_(in)

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

L_(in) = 1 mm × 0.039370078740157 in

L_(in) = 0.039370078740157 in

The final result is:

1 mm → 0.039370078740157 in

We conclude that 1 millimeter is equivalent to 0.039370078740157 inches:

1 millimeter = 0.039370078740157 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 25.4 × 1 millimeter.

Another way is saying that 1 millimeter is equal to 1 ÷ 25.4 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one millimeter is approximately zero point zero three nine inches:

1 mm ≅ 0.039 in

An alternative is also that one inch is approximately twenty-five point four times one millimeter.

Conversion table

millimeters to inches chart

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