40 miles to km

To convert miles to kilometers, you can use the conversion factor that 1 mile is equal to 1.60934 kilometers. Here are the step-by-step instructions to convert 40 miles to kilometers:

Step 1: Write down the given value:
40 miles

Step 2: Set up the conversion factor:
1 mile = 1.60934 kilometers

Step 3: Multiply the given value by the conversion factor:
40 miles * 1.60934 kilometers/mile

Step 4: Perform the multiplication:
40 * 1.60934 = 64.3736 kilometers

Step 5: Round the result to an appropriate number of decimal places:
Since kilometers are typically rounded to two decimal places, the final answer is:
40 miles is approximately equal to 64.37 kilometers.

Therefore, 40 miles is approximately equal to 64.37 kilometers.