EVERYDAY
Length
Distance, height, thickness and astronomical length.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result63241.1 au1 ly = 63241.1 au
EVERYDAY · ENGINEERING · SCIENCE
ly to au Converter
Convert light-year (ly) to astronomical unit (au). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through metre
Enter a light-year value to calculate astronomical unit with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| quectometrefrom ly | qm | 9.46073e45 |
| rontometrefrom ly | rm | 9.46073e42 |
| yoctometrefrom ly | ym | 9.46073e39 |
| zeptometrefrom ly | zm | 9.46073e36 |
| attometrefrom ly | am | 9.46073e33 |
| femtometrefrom ly | fm | 9.46073e30 |
| picometrefrom ly | pm | 9.46073e27 |
| nanometrefrom ly | nm | 9.46073e24 |
| ångströmfrom ly | Å | 9.46073e25 |
| micrometrefrom ly | µm | 9.46073e21 |
| millimetrefrom ly | mm | 9.46073e18 |
| centimetrefrom ly | cm | 9.46073e17 |
| decimetrefrom ly | dm | 9.46073e16 |
| metrefrom ly | m | 9.46073e15 |
| decametrefrom ly | dam | 946073000000000 |
| hectometrefrom ly | hm | 94607300000000 |
| kilometrefrom ly | km | 9460730000000 |
| megametrefrom ly | Mm | 9460730000 |
| gigametrefrom ly | Gm | 9460730 |
| terametrefrom ly | Tm | 9460.73 |
| petametrefrom ly | Pm | 9.46073 |
| exametrefrom ly | Em | 0.00946073 |
| zettametrefrom ly | Zm | 0.00000946073 |
| yottametrefrom ly | Ym | 0.00000000946073 |
| ronnametrefrom ly | Rm | 9.46073e-12 |
| quettametrefrom ly | Qm | 9.46073e-15 |
| thou / milfrom ly | mil | 3.7247e20 |
| inchfrom ly | in | 3.7247e17 |
| footfrom ly | ft | 3.10391e16 |
| yardfrom ly | yd | 1.03464e16 |
| chainfrom ly | ch | 470290000000000 |
| furlongfrom ly | fur | 47029000000000 |
| international milefrom ly | mi | 5878630000000 |
| nautical milefrom ly | nmi | 5108390000000 |
| U.S. survey footfrom ly | ftUS | 3.10391e16 |
| typographic pointfrom ly | pt | 2.68178e19 |
| astronomical unitfrom ly | au | 63241.1 |
| light-secondfrom ly | ls | 31557600 |
| light-yearfrom ly | ly | 1 |
| parsecfrom ly | pc | 0.306601 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
ly to au Conversion Reference
Light-year (ly) and astronomical unit (au) are units of length. Use this page to convert in either direction.
Conversion Examples
| Light-year (ly) | Astronomical Unit (au) |
|---|---|
| 1 ly | 63241.1 au |
| 5 ly | 316205 au |
| 10 ly | 632411 au |
| 100 ly | 6324110 au |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
au to ly (astronomical unit to light-year)
Related Length Conversions
ly to qm (light-year to quectometre)ly to rm (light-year to rontometre)ly to ym (light-year to yoctometre)ly to zm (light-year to zeptometre)ly to am (light-year to attometre)ly to fm (light-year to femtometre)ly to pm (light-year to picometre)ly to nm (light-year to nanometre)ly to Å (light-year to ångström)ly to µm (light-year to micrometre)ly to mm (light-year to millimetre)ly to cm (light-year to centimetre)ly to dm (light-year to decimetre)ly to m (light-year to metre)ly to dam (light-year to decametre)ly to hm (light-year to hectometre)ly to km (light-year to kilometre)ly to Mm (light-year to megametre)ly to Gm (light-year to gigametre)ly to Tm (light-year to terametre)ly to Pm (light-year to petametre)ly to Em (light-year to exametre)ly to Zm (light-year to zettametre)ly to Ym (light-year to yottametre)ly to Rm (light-year to ronnametre)ly to Qm (light-year to quettametre)ly to mil (light-year to thou / mil)ly to in (light-year to inch)ly to ft (light-year to foot)ly to yd (light-year to yard)ly to ch (light-year to chain)ly to fur (light-year to furlong)ly to mi (light-year to international mile)ly to nmi (light-year to nautical mile)ly to ftUS (light-year to U.S. survey foot)ly to pt (light-year to typographic point)ly to ls (light-year to light-second)ly to pc (light-year to parsec)