Formula

ly = m / 9.46055E+15

Quick Rough Maths

To get the Light Years, divide the number of Metres by 9460.6 trillion

Metres (m) in 1 Light Year

There are 9.46055E+15 Metres in 1 Light Year

Light Years (ly) in 1 Metre

There are 0 Light Years in 1 Metre

Symbol: **m**

Unit System: SI

Unit System: SI

The metre (or meter; US spelling) is the SI base unit of length and uses the symbol m.

Originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole but was redefined in 1799 in terms of a prototyped metre bar (this bar was changed again in 1889).

In 1983 the current definition was adopted and it is now the most common unit in any property in the world and is used in thousands of formulae to describe countless characteristics.

Let's hear it for the metre!

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.

10000m = 0ly

20000m = 0ly

30000m = 0ly

40000m = 0ly

50000m = 0ly

60000m = 0ly

70000m = 0ly

80000m = 0ly

90000m = 0ly

100000m = 0ly

110000m = 0ly

120000m = 0ly

130000m = 0ly

140000m = 0ly

150000m = 0ly

160000m = 0ly

170000m = 0ly

180000m = 0ly

190000m = 0ly

200000m = 0ly

210000m = 0ly

220000m = 0ly

230000m = 0ly

240000m = 0ly

260000m = 0ly

270000m = 0ly

280000m = 0ly

290000m = 0ly

300000m = 0ly

310000m = 0ly

320000m = 0ly

330000m = 0ly

340000m = 0ly

350000m = 0ly

360000m = 0ly

370000m = 0ly

380000m = 0ly

390000m = 0ly

400000m = 0ly

410000m = 0ly

420000m = 0ly

430000m = 0ly

440000m = 0ly

450000m = 0ly

460000m = 0ly

470000m = 0ly

480000m = 0ly

490000m = 0ly

510000m = 0ly

520000m = 0ly

530000m = 0ly

540000m = 0ly

550000m = 0ly

560000m = 0ly

570000m = 0ly

580000m = 0ly

590000m = 0ly

600000m = 0ly

610000m = 0ly

620000m = 0ly

630000m = 0ly

640000m = 0ly

650000m = 0ly

660000m = 0ly

670000m = 0ly

680000m = 0ly

690000m = 0ly

700000m = 0ly

710000m = 0ly

720000m = 0ly

730000m = 0ly

740000m = 0ly

760000m = 0ly

770000m = 0ly

780000m = 0ly

790000m = 0ly

800000m = 0ly

810000m = 0ly

820000m = 0ly

830000m = 0ly

840000m = 0ly

850000m = 0ly

860000m = 0ly

870000m = 0ly

880000m = 0ly

890000m = 0ly

900000m = 0ly

910000m = 0ly

920000m = 0ly

930000m = 0ly

940000m = 0ly

950000m = 0ly

960000m = 0ly

970000m = 0ly

980000m = 0ly

990000m = 0ly