parsec-light-year conversion

Conversion number between parsec [pc] and light-year [ly] is 3.2615637766481. This means, that parsec is bigger unit than light-year.

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Switch to reverse conversion:
from light-year to parsec conversion

Enter the number in parsec:

Decimal Fraction Exponential Expression

[pc]

eg.: 10.12345 or 1.123e5

Result in light-year

precision	[info]
Decimal:	[!]
Exponential:

Calculation process of conversion value

1 parsec = `(3.085677581*10^16) / (9460730472580800)` = 3.2615637766481 light-year
1 light-year = `(9460730472580800) / (3.085677581*10^16)` = 0.30660139383437 parsec
? parsec × `(3.085677581*10^16 ("m"/"parsec")) / (9460730472580800 ("m"/"light-year"))` = ? light-year

High precision conversion

If conversion between parsec to metre and metre to light-year is exactly definied, high precision conversion from parsec to light-year is enabled.

Since definition contain rounded number(s) too, there is no sense for high precision calculation, but if you want, you can enable it. Keep in mind, that converted number will be inaccurate due this rounding error!

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parsec to light-year conversion chart

Start value:	[parsec]
Step size	[parsec]
How many lines?	(max 100)

visual:

parsec	light-year
0	0
10	32.615637766481
20	65.231275532961
30	97.846913299442
40	130.46255106592
50	163.0781888324
60	195.69382659888
70	228.30946436536
80	260.92510213184
90	293.54073989833
100	326.15637766481
110	358.77201543129

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Multiple conversion

Enter numbers in parsec and click convert button.
One number per line.

Converted numbers in light-year:
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Details about parsec and light-year units:

Convert Parsec to other unit:

parsec

Definition of parsec unit: ≈ 3.085677581x10¹⁶. Distance of star with parallax shift of one arc second from a base of one astronomical unit

Convert Light-year to other unit:

light-year

Definition of light-year unit: ≡ Distance light travels in vacuum in 365.25 days.

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	×10		[pc]