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 438 millimeters into inches we have to multiply 438 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

438 mm → L_(in)

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

L_(in) = 438 mm × 0.039370078740157 in

L_(in) = 17.244094488189 in

The final result is:

438 mm → 17.244094488189 in

We conclude that 438 millimeters is equivalent to 17.244094488189 inches:

438 millimeters = 17.244094488189 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.057990867579909 × 438 millimeters.

Another way is saying that 438 millimeters is equal to 1 ÷ 0.057990867579909 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred thirty-eight millimeters is approximately seventeen point two four four inches:

438 mm ≅ 17.244 in

An alternative is also that one inch is approximately zero point zero five eight times four hundred thirty-eight 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