light years to millimeters
Convert light year to millimeter — instant, free, with the formula shown.
1 ly=9.4607e+18 mm
How to convert light year to millimeter
To convert light year to millimeter, multiply by 9.4607e+18:
mm = ly × 9.4607e+18
For example, 10 ly × 9.4607e+18 = 9.4607e+19 mm.
ly to mm conversion table
| light years (ly) | millimeters (mm) |
|---|---|
| 1 ly | 9.4607e+18 mm |
| 2 ly | 1.8921e+19 mm |
| 5 ly | 4.7304e+19 mm |
| 10 ly | 9.4607e+19 mm |
| 25 ly | 2.3652e+20 mm |
| 50 ly | 4.7304e+20 mm |
| 100 ly | 9.4607e+20 mm |
| 250 ly | 2.3652e+21 mm |
| 500 ly | 4.7304e+21 mm |
| 1000 ly | 9.4607e+21 mm |
Other light year conversions
Convert to millimeter from another unit
ly to mm — frequently asked
How many millimeters are in 1 light year?
1 light year = 9.4607e+18 millimeters (ly × 9.4607e+18 = mm).
What is the formula to convert light year to millimeter?
Multiply your light year value by 9.4607e+18 to get millimeter.
How do I convert 10 light years to millimeters?
10 ly = 9.4607e+19 mm. For 100 ly the answer is 9.4607e+20 mm. Use the calculator on this page for any other value.