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 15.5 millimeters into inches we have to multiply 15.5 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

15.5 mm → L_(in)

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

L_(in) = 15.5 mm × 0.039370078740157 in

L_(in) = 0.61023622047244 in

The final result is:

15.5 mm → 0.61023622047244 in

We conclude that 15.5 millimeters is equivalent to 0.61023622047244 inches:

15.5 millimeters = 0.61023622047244 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 1.6387096774194 × 15.5 millimeters.

Another way is saying that 15.5 millimeters is equal to 1 ÷ 1.6387096774194 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that fifteen point five millimeters is approximately zero point six one inches:

15.5 mm ≅ 0.61 in

An alternative is also that one inch is approximately one point six three nine times fifteen point five 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