Formula

ly = km / 9460550000000

Quick Rough Maths

To get the Light Years, divide the number of Kilometres by 9.5 trillion

Kilometres (km) in 1 Light Year

There are 9460550000000 Kilometres in 1 Light Year

Light Years (ly) in 1 Kilometre

There are 0 Light Years in 1 Kilometre

Symbol: **km**

Unit System: SI

Unit System: SI

The kilometre is a unit of length and is a multiple of the metre; an SI derived unit. It has the symbol km.

A kilometre is equal to 1000m, 1094 yards and 0.621 miles.

Kilometres is used to measure road distances in the US, though the UK is still using the imperial "sister" miles.

Symbol: **ly**

Unit System: Astronomical System of Units

Unit System: Astronomical System of Units

The light year is a unit of length in the Astronomical system of units. It uses the symbol ly.

Often confused with a unit of time as it contains the word "year", it is actually defined by the International Astronomical Union (IAU) as the amount of distance that light travels in a vacuum in one Julian year (365.25 days).

Using the speed of light (299,792,458 m/s or 'c') and the Julian year (as apposed to the Gregorian year which is 365.2425 days), we can equivalate 1 light year as 9,460,730,472,580,800 metres or ≈ 9.46 trillion kilometres.

10000km = 0ly

20000km = 0ly

30000km = 0ly

40000km = 0ly

50000km = 0ly

60000km = 0ly

70000km = 0ly

80000km = 0ly

90000km = 0ly

100000km = 0ly

110000km = 0ly

120000km = 0ly

130000km = 0ly

140000km = 0ly

150000km = 0ly

160000km = 0ly

170000km = 0ly

180000km = 0ly

190000km = 0ly

200000km = 0ly

210000km = 0ly

220000km = 0ly

230000km = 0ly

240000km = 0ly

260000km = 0ly

270000km = 0ly

280000km = 0ly

290000km = 0ly

300000km = 0ly

310000km = 0ly

320000km = 0ly

330000km = 0ly

340000km = 0ly

350000km = 0ly

360000km = 0ly

370000km = 0ly

380000km = 0ly

390000km = 0ly

400000km = 0ly

410000km = 0ly

420000km = 0ly

430000km = 0ly

440000km = 0ly

450000km = 0ly

460000km = 0ly

470000km = 0ly

480000km = 0ly

490000km = 0ly

510000km = 0ly

520000km = 0ly

530000km = 0ly

540000km = 0ly

550000km = 0ly

560000km = 0ly

570000km = 0ly

580000km = 0ly

590000km = 0ly

600000km = 0ly

610000km = 0ly

620000km = 0ly

630000km = 0ly

640000km = 0ly

650000km = 0ly

660000km = 0ly

670000km = 0ly

680000km = 0ly

690000km = 0ly

700000km = 0ly

710000km = 0ly

720000km = 0ly

730000km = 0ly

740000km = 0ly

760000km = 0ly

770000km = 0ly

780000km = 0ly

790000km = 0ly

800000km = 0ly

810000km = 0ly

820000km = 0ly

830000km = 0ly

840000km = 0ly

850000km = 0ly

860000km = 0ly

870000km = 0ly

880000km = 0ly

890000km = 0ly

900000km = 0ly

910000km = 0ly

920000km = 0ly

930000km = 0ly

940000km = 0ly

950000km = 0ly

960000km = 0ly

970000km = 0ly

980000km = 0ly

990000km = 0ly