To convert kilometers (km) to miles, you can use the following step-by-step instructions:

Step 1: Understand the conversion factor

1 kilometer is equal to 0.621371 miles. This conversion factor is a constant value that allows us to convert between the two units.

Step 2: Set up the conversion equation

To convert 1 kilometer to miles, we can set up the equation as follows:

1 km = x miles

Step 3: Apply the conversion factor

Multiply the value in kilometers (1 km) by the conversion factor (0.621371) to get the equivalent value in miles. The equation becomes:

1 km = 0.621371 miles

Step 4: Perform the calculation

Multiply 1 km by 0.621371:

1 km * 0.621371 = 0.621371 miles

Step 5: Round the result (optional)

If you need a rounded value, you can round the result to the desired number of decimal places. In this case, the result is already rounded to six decimal places.

Step 6: Write the final answer

The final answer is:

1 kilometer is equal to approximately 0.621371 miles.

So, 1 km = 0.621371 miles.