How to convert kilometers to miles [Travel Hack]

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I’ll be honest. I wish we used the metric system in America. It’s weird to measure things differently than the rest of the world. Plus, the metric system is just easier to convert.

Until then, here is are two handy metric conversion hacks to keep in your pocket.

 

CONVERSION HACK #1

Drop the 0; Multiply by 6

This method works best if the number you’re trying to convert is an even number.

Instructions:

  • Drop the 0
    • 80 kilometers becomes 8
  • Multiply by 6
    • 8 times 6 equals 48

Therefore 80 kilometers is 48 miles.

CONVERSION HACK #2

Determine 60% (or 62% to be exact)

Method #1 is great for round numbers ending in zero, but what about all the numbers ending in 1-9?

If you’re good with percentages, this is a great method to use.

Take number of kilometers you want to convert, and figure out what 60% (or 62% if you want to be exact) is to get the number in miles.

Instructions:

Start with 86 mp

  • Divide by 2
    • 86 kilometers 43
  • Determine 10% of original number
    • 10% of 86 is 8.6 (move the decimal over)
  • Add the two numbers together
    • 43 + 8.6 = 51.6 mph
  • Round up
    • 51.6 rounds up to 52

Therefore 86 kilometers is around 52 miles. The actual calculated conversion is 53.4379 so we’re really not that far off.

PRACTICE

Let’s try one more.

If you’re going 182 kph down Germany’s autobahn, what is your speed in mph?

  • Divide by 182 by 2
    • 182 / 2 = 91
  • Determine 10% of original number
    • 10% of 182 is 18.2
  • Add the two numbers together
    • 91 + 18.2 = 109.2
  • Round up
    • 109.2 rounds up to 110

The actual conversion is 115 mph, so the higher the number you’re trying to convert, the more that 2% will matter. But this little math hack will get you close enough.

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