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 1000 millimeters into inches we have to multiply 1000 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

1000 mm → L_(in)

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

L_(in) = 1000 mm × 0.039370078740157 in

L_(in) = 39.370078740157 in

The final result is:

1000 mm → 39.370078740157 in

We conclude that 1000 millimeters is equivalent to 39.370078740157 inches:

1000 millimeters = 39.370078740157 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.0254 × 1000 millimeters.

Another way is saying that 1000 millimeters is equal to 1 ÷ 0.0254 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand millimeters is approximately thirty-nine point three seven inches:

1000 mm ≅ 39.37 in

An alternative is also that one inch is approximately zero point zero two five times one thousand 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