Kilometre > Miles or Vise-Versa

[Shannon]

Alright, browsing through the forums people go on about miles. This car has a top speed of xxxmph. Get the drift. Well some of us don't use miles. So, here is a way of converting kilometers to miles or miles to kilometers. Alright, we all have a calculator don't we?

A kilometer is roughly 1.6 miles so to convert kilometers to miles, simply divide the number of kilometers by 1.6. To convert miles to kilometers simple multiply the number of miles by 1.6.

 

[Talentless]

Me have saideth the full number before, it be 1.609344 km. 1.6 is good to an extent. i prefer to be more exact

 

[Robin2]

just enter 1.61 into a quackalator, get around the same number

 

[Talentless]

AFLAC!

 

[Robin2]

what the eff?

 

[Shannon]

Originally posted by Talentless
Me have saideth the full number before, it be 1.609344 km. 1.6 is good to an extent. i prefer to be more exact

Sorry. 1.609344km then.

 

[sn00pie]

1 km > 1 mile = wrong!

1 km < 1 mile

 

[GilesGuthrie]

Mentally calculating it, it's easier to use the old 5/8 trick, thus

A mile is bigger than a kilometer, hence miles = KMs * 5 / 8

> 100KMH = 100 * 5 / 8 = 62.5MPH.

How is this easier I hear you ask? Well, multiplication by 5 is really easy, as is division by 5. But if you're having difficulty with that, multiply by 10 (i.e. add a zero on the end), then halve it. If you're multiplying/dividing by 8, then you multiply/divide by TWO, THREE times, because 8 = 2 * 2 * 2.

Hence:

100KMH = 100 x 10 / 2 / 2 /2 / 2

So, in your head, multiply by Ten
=1000
Divide by 2
=500
Divide by 2
=250
Divide by 2
=125
Divide by 2
=62.5.

Converting the other way is just the reverse. Easy!