Conversion formula

The conversion factor from inches to millimeters is 25.4, which means that 1 inch is equal to 25.4 millimeters:

1 in = 25.4 mm

To convert 5 inches into millimeters we have to multiply 5 by the conversion factor in order to get the length amount from inches to millimeters. We can also form a simple proportion to calculate the result:

1 in → 25.4 mm

5 in → L_(mm)

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

L_(mm) = 5 in × 25.4 mm

L_(mm) = 127 mm

The final result is:

5 in → 127 mm

We conclude that 5 inches is equivalent to 127 millimeters:

5 inches = 127 millimeters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.0078740157480315 × 5 inches.

Another way is saying that 5 inches is equal to 1 ÷ 0.0078740157480315 millimeters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that five inches is approximately one hundred twenty-seven millimeters:

5 in ≅ 127 mm

An alternative is also that one millimeter is approximately zero point zero zero eight times five inches.

Conversion table

inches to millimeters chart

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