light-year to millimetre
Live light-year (ly) to millimetre (mm) converter. Plus a 10-value reference table and FAQs.
Conversion table
Ten sample values from light-year to millimetre. Use the converter above for arbitrary values.
| light-year (ly) | → | millimetre (mm) |
|---|---|---|
| 0.001 ly | → | 9.4607e+15 mm |
| 0.01 ly | → | 9.4607e+16 mm |
| 0.1 ly | → | 9.4607e+17 mm |
| 0.5 ly | → | 4.7304e+18 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 |
| 100 ly | → | 9.4607e+20 mm |
| 1,000 ly | → | 9.4607e+21 mm |
About the light-year
Distance light travels in one Julian year — about 9.46 trillion km. Astronomy.
About the millimetre
1/1000 of a metre. Standard for small machined parts and rainfall.
Frequently asked questions
Frequently Asked Questions
How do I convert light-year to millimetre?
Multiply the light-year value by 9.4607e+18 to get it in millimetre. For example, 10 ly = 9.46e+19 mm.
What is 1 ly in mm?
1 ly = 9.4607e+18 mm.
What is 100 ly in mm?
100 ly = 9.46e+20 mm.
What is the formula?
Linear: multiply by 9.4607e+18 (the unit factor ratio).
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