Light Year Converters

Convert light years to kilometers, miles, astronomical units and parsecs, and back, instantly as you type.

Convert light years to kilometers (ly to km) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert kilometers to light years (km to ly) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert light years to miles (ly to mi) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert miles to light years (mi to ly) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert light years to astronomical units (ly to au) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert astronomical units to light years (au to ly) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert light years to parsecs (ly to pc) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.

Convert parsecs to light years (pc to ly) instantly as you type, or switch to any other unit: light years, kilometers, miles, astronomical units or parsecs.