Formula

ly = ft / 3.1038549868766E+16

Quick Rough Maths

To get the Light Years, divide the number of Feet by 31038.5 trillion

Feet (ft) in 1 Light Year

There are 3.1038549868766E+16 Feet in 1 Light Year

Light Years (ly) in 1 Foot

There are 0 Light Years in 1 Foot

Symbol: **ft**

Unit System: Imperial

Unit System: Imperial

The foot is a unit of length in the imperial unit system and uses the symbol ft.

One foot is exactly equal to 12 inches. It is also exactly equal to 0.3048m. One yard is comprised of three feet.

The foot is just behind the metre in terms of widespread use due to its previous popularity. The US is the only developed country that still uses the foot in preference to the metre.

The UK still uses feet to express human height more than metres.

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.

10000ft = 0ly

20000ft = 0ly

30000ft = 0ly

40000ft = 0ly

50000ft = 0ly

60000ft = 0ly

70000ft = 0ly

80000ft = 0ly

90000ft = 0ly

100000ft = 0ly

110000ft = 0ly

120000ft = 0ly

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180000ft = 0ly

190000ft = 0ly

200000ft = 0ly

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760000ft = 0ly

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800000ft = 0ly

810000ft = 0ly

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830000ft = 0ly

840000ft = 0ly

850000ft = 0ly

860000ft = 0ly

870000ft = 0ly

880000ft = 0ly

890000ft = 0ly

900000ft = 0ly

910000ft = 0ly

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930000ft = 0ly

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960000ft = 0ly

970000ft = 0ly

980000ft = 0ly

990000ft = 0ly