## 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 42.5 inches into millimeters we have to multiply 42.5 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

42.5 in → L(mm)

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

L(mm) = 42.5 in × 25.4 mm

L(mm) = 1079.5 mm

The final result is:

42.5 in → 1079.5 mm

We conclude that 42.5 inches is equivalent to 1079.5 millimeters:

42.5 inches = 1079.5 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 0.00092635479388606 × 42.5 inches.

Another way is saying that 42.5 inches is equal to 1 ÷ 0.00092635479388606 millimeters.

## Approximate result

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

42.5 in ≅ 1079.5 mm

An alternative is also that one millimeter is approximately zero point zero zero one times forty-two point 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

inches (in) millimeters (mm)
43.5 inches 1104.9 millimeters
44.5 inches 1130.3 millimeters
45.5 inches 1155.7 millimeters
46.5 inches 1181.1 millimeters
47.5 inches 1206.5 millimeters
48.5 inches 1231.9 millimeters
49.5 inches 1257.3 millimeters
50.5 inches 1282.7 millimeters
51.5 inches 1308.1 millimeters
52.5 inches 1333.5 millimeters