How do you convert yards to kilometers?
A yard is exactly 0.0009144 kilometers, so a kilometer is about 1,093.61 yards.
Multiply yards by 0.0009144 to get kilometers – the factor is exact. 100 yards x 0.0009144 = 0.09144 kilometers, which is 91.44 meters.
The same factor works for any number: 150 yards x 0.0009144 = 0.13716 kilometers. A thousand yards comes to 0.9144 kilometers, so it falls just short of a kilometer.
What is a yard?
A yard is 3 feet or 36 inches. In the US you mostly see it on football fields, which run 100 yards between the goal lines, and in the UK short road distances are still signed in yards.
The yard is traditionally the distance from the nose of King Henry I of England to the thumb of his outstretched arm, though its length varied from place to place for centuries. It was only fixed internationally in 1959, at exactly 0.9144 meters.
Nearly every other country uses the meter instead. In the US, bulk soil and mulch are still sold by the cubic yard, which is 27 cubic feet.
What is a kilometer?
A kilometer is 1,000 meters, or about 0.621 miles. 'Kilo' is the Greek-derived prefix for a thousand. It is the unit for road distances nearly everywhere except the US and UK, which still use miles.
A kilometer is about 3,281 feet or 39,370 inches. At a walking pace of 5km/h it takes about 12 minutes to cover.
Going from kilometers to meters just means moving the decimal point three places. A mile has to be broken into 1,760 yards or 5,280 feet first, and neither of those is a round number of anything.