## Conversion formula

The conversion factor from kilometers to millimeters is 1000000, which means that 1 kilometer is equal to 1000000 millimeters:

1 km = 1000000 mm

To convert 426 kilometers into millimeters we have to multiply 426 by the conversion factor in order to get the length amount from kilometers to millimeters. We can also form a simple proportion to calculate the result:

1 km → 1000000 mm

426 km → L(mm)

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

L(mm) = 426 km × 1000000 mm

L(mm) = 426000000 mm

The final result is:

426 km → 426000000 mm

We conclude that 426 kilometers is equivalent to 426000000 millimeters:

426 kilometers = 426000000 millimeters

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 millimeter is equal to 2.3474178403756E-9 × 426 kilometers.

Another way is saying that 426 kilometers is equal to 1 ÷ 2.3474178403756E-9 millimeters.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that four hundred twenty-six kilometers is approximately four hundred twenty-six million millimeters:

426 km ≅ 426000000 mm

An alternative is also that one millimeter is approximately zero times four hundred twenty-six kilometers.

## Conversion table

### kilometers to millimeters chart

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

kilometers (km) millimeters (mm)
427 kilometers 427000000 millimeters
428 kilometers 428000000 millimeters
429 kilometers 429000000 millimeters
430 kilometers 430000000 millimeters
431 kilometers 431000000 millimeters
432 kilometers 432000000 millimeters
433 kilometers 433000000 millimeters
434 kilometers 434000000 millimeters
435 kilometers 435000000 millimeters
436 kilometers 436000000 millimeters