Table Of Contents
Light year to millimeters Conversion
1 light year (ly) is equal to 9460730473000000000 millimeters (mm).
1 ly = 9460730473000000000 mm
or
1 mm = 0.0000000000000000001057000834 ly
Formula
To convert a length from light year (ly) to millimeters (mm), multiply the length in light year by 9460730473000000000
l(mm) = l(ly) × 9460730473000000000
Examples:
Convert 100 light year to millimeters:
l(mm) = 100ly × 9460730473000000000 = 946073047300000000000 mm
Conversion table
| Light year (ly) | Millimeters (mm) |
|---|---|
| 1 ly | 9.46073e18 mm |
| 2 ly | 1.892146e19 mm |
| 3 ly | 2.838219e19 mm |
| 5 ly | 4.730365e19 mm |
| 10 ly | 9.46073e19 mm |
| 20 ly | 1.892146e20 mm |
| 25 ly | 2.365183e20 mm |
| 50 ly | 4.730365e20 mm |
| 100 ly | 9.46073e20 mm |
| 250 ly | 2.365183e21 mm |
| 500 ly | 4.730365e21 mm |
| 1000 ly | 9.46073e21 mm |
| Millimeters (mm) | Light year (ly) |
|---|---|
| 1 mm | 0 ly |
| 2 mm | 0 ly |
| 3 mm | 0 ly |
| 5 mm | 0 ly |
| 10 mm | 0 ly |
| 20 mm | 0 ly |
| 25 mm | 0 ly |
| 50 mm | 0 ly |
| 100 mm | 0 ly |
| 250 mm | 0 ly |
| 500 mm | 0 ly |
| 1000 mm | 0 ly |
Frequently asked questions
How do I convert light year to millimeters?
Multiply the value in light year by 9460730473000000000 to get the result in millimeters. For example, 5 ly × 9460730473000000000 = 4.730365e19 mm.
How many millimeters are in 1 light year?
1 light year (ly) is equal to 9.46073e18 millimeters (mm).
How do I convert millimeters back to light year?
Use the inverse operation: divide the value in millimeters by 9460730473000000000 to get the result in light year.
How accurate is the light year to millimeters conversion?
The converter multiplies by the conversion factor 9460730473000000000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
