tedt long
To use the calculator, place your cursor in the desired unit field and write a number.The calculator will automatically convert your number and display the result in the other unit fields. If needed use the dot "." as the decimal separator.
pc = ly3.2615635
ly = pc×3.2615635
One light year is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.
Source: Wikipedia
Distances to the closest stars can be determined through measurement of their trigonometric parallax. The parsec was defined to be the distance at which 1 AU (perpendicular to the line of sight) subtends an angle of 1 arcsecond.
Source: Swinburne University
Below you can generate and download as CSV, Excel, PDF or print the Light-years to Parsecs conversion table based on your needs.
Selected rounding: none (You can change it above in the dropdown)
(30,860,000,000,000,000 meters)
(9,460,731,000,000,000 meters)