How to convert light years to millimeters
1 light year is equal to 9.460730473 × 10¹⁸ millimeters, and 1 millimeter is equal to 1.057000834 × 10⁻¹⁹ light years. To convert, multiply by the conversion factor:
millimeters = light years × 9.460730473 × 10¹⁸
millimeters = light years ÷ 1.057000834 × 10⁻¹⁹Example: convert 1 ly to mm: 1 × 9.460730473 × 10¹⁸ = 9.460730473 × 10¹⁸ mm.
Light Year to Millimeter conversion table
| Light Year (ly) | Millimeter (mm) |
|---|---|
| 0.01 ly | 9.460730473 × 10¹⁶ mm |
| 0.1 ly | 9.460730473 × 10¹⁷ mm |
| 1 ly | 9.460730473 × 10¹⁸ mm |
| 2 ly | 1.892146095 × 10¹⁹ mm |
| 3 ly | 2.838219142 × 10¹⁹ mm |
| 5 ly | 4.730365236 × 10¹⁹ mm |
| 10 ly | 9.460730473 × 10¹⁹ mm |
| 20 ly | 1.892146095 × 10²⁰ mm |
| 50 ly | 4.730365236 × 10²⁰ mm |
| 100 ly | 9.460730473 × 10²⁰ mm |
| 250 ly | 2.365182618 × 10²¹ mm |
| 500 ly | 4.730365236 × 10²¹ mm |
| 1,000 ly | 9.460730473 × 10²¹ mm |
About the light year
A light-year is the distance light travels in a vacuum in one Julian year (365.25 days): about 9.46 trillion km. The nearest star system, Alpha Centauri, is about 4.37 light-years away.
Symbol: ly · 1 ly = 9.460730473 × 10¹⁵ m · Category: Astronomical
About the millimeter
A millimeter is one thousandth of a meter. It's the standard unit in engineering drawings, manufacturing, rainfall and screen and paper sizes.
Symbol: mm · 1 mm = 0.001 m · Category: Metric (SI)