KM to Yards Converter

Common questions

How many yards are in a kilometre?

1,093.61329834 yards, which is 1,250,000/1,143 shown to the twelve significant digits this page prints. The division scales straight up and down, so 0.1 km is 109.361329834 yd, 0.5 km is 546.806649169 yd, 2 km is 2,187.22659668 yd, 10 km is 10,936.1329834 yd and 100 km is 109,361.329834 yd. Only the digit grouping changes as you move the decimal point, because the factor itself never changes.

What is the formula for km to yards?

yd = km × 1,000 / 0.9144, which is the same as multiplying by 1,093.6132983377. The reverse is the tidier of the two: km = yd × 0.0009144, since a yard is exactly 0.9144 metres and a metre is exactly 0.001 km, so 440 yd is exactly 0.402336 km and 880 yd is exactly 0.804672 km. The swap button between the two boxes reverses the pair and turns this into a yards to kilometres converter without a reload.

Worked example: how many yards is a 5K, and a marathon?

A 5 km race is 5,468.06649169 yd and a 42.195 km marathon is 46,145.0131234 yd. Type either figure into the From box and the list underneath gives the same distance in the rest of the common length units, so the 5 km also reads 3.10685596119 mi and 5,000 m, and the marathon reads 26.2187574565 mi and 42,195 m. Each row has its own Copy button, and Copy result in the strip above copies the headline figure without the thousands separators it is displayed with.

Is a yard the same in the United States and the United Kingdom?

For everything except historic land survey data, yes: both countries define the yard as exactly 0.9144 metres, and that is the yard this page uses. The exception is the US survey yard of 3,600/3,937 metres, kept for older survey records, which is longer by about two parts in a million. Over a kilometre the two definitions differ by roughly 2 mm: 1,093.61329834 international yards against about 1,093.6111 survey yards, a figure this page does not print because the converter holds the international yard only. The National Institute of Standards and Technology retired the survey foot and yard at the end of 2022.

How many yards are in a mile, and does that agree with the kilometre figure?

A mile is exactly 1,760 yards, and this converter puts that mile at exactly 1.609344 km, so typing 1.609344 km returns exactly 1,760 yd. The list under the answer gives the other half of the check: 1 km reads 0.621371192237 mi, and a quarter mile of 440 yd reads 0.402336 km. Every one of these comes from the same two defined factors, 0.9144 metres to the yard and 1,609.344 metres to the mile.

What else does the page show for 1 km?

The same kilometre in every common length unit at once: 1,000,000 mm, 100,000 cm, 1,000 m, 39,370.0787402 in, 3,280.83989501 ft, 1,093.61329834 yd, 0.621371192237 mi and 0.539956803456 nmi. The readout strip carries a Show 7 more switch for the uncommon units, which adds rows for 1,000,000,000 µm, 1,000,000,000,000 nm, 39,370,078.7402 thou and 4.9709695379 furlongs, plus the astronomical ones where a kilometre reads 6.684587e-9 AU.

Why does the answer end in 61329834 instead of something round?

Because the exact value is a fraction that does not terminate, and the page prints twelve significant digits rather than inventing a round number. Results below 0.000001 or at 1e15 and above switch to exponential notation instead of a row of zeroes, which is why a kilometre in light years reads 1.057001e-13. You can type the input with or without commas, so 1,000 km and 1000 km both give 1,093,613.29834 yd, and 1e3 is read the same way.

Why does the page open on kilometres and yards when I last converted something else?

Because a page that names a pair should show that pair. This one sets kilometres and yards on arrival, ahead of whatever the converter last remembered, and it leaves the main unit converter alone: go back to the converter itself and it is still on the pair you left it on. The number you last typed does travel with you, since it is usually the one you are still working on. Nothing is uploaded either way: the conversion is arithmetic against a table of factors that ships with the page.