Light-years to millimeters
1 light-year in millimeters
1 ly = 9.4607305 × 10^18 mm
mm = ly × 9.460730473 × 10^18
To convert light-years to millimeters, multiply by 9.460730473 × 10^18. The table below gives the values people look up most often, and the converter works for any number.
Light-years to millimeters table
| Light-years | Millimeters |
|---|---|
| 1 ly | 9.4607305 × 10^18 |
| 2 ly | 1.8921461 × 10^19 |
| 3 ly | 2.8382191 × 10^19 |
| 4 ly | 3.7842922 × 10^19 |
| 5 ly | 4.7303652 × 10^19 |
| 10 ly | 9.4607305 × 10^19 |
| 15 ly | 1.4191096 × 10^20 |
| 20 ly | 1.8921461 × 10^20 |
| 25 ly | 2.3651826 × 10^20 |
| 30 ly | 2.8382191 × 10^20 |
| 40 ly | 3.7842922 × 10^20 |
| 50 ly | 4.7303652 × 10^20 |
| 75 ly | 7.0955479 × 10^20 |
| 100 ly | 9.4607305 × 10^20 |
| 250 ly | 2.3651826 × 10^21 |
| 500 ly | 4.7303652 × 10^21 |
| 1,000 ly | 9.4607305 × 10^21 |
How the conversion works
The relationship is mm = ly × 9.460730473 × 10^18. Both units measure length, so the conversion is a fixed factor that never changes.
Common questions
- How many millimeters are in one light-year?
- One light-year equals 9.4607305 × 10^18 millimeters. mm = ly × 9.460730473 × 10^18.
- How do you convert light-years to millimeters?
- Use mm = ly × 9.460730473 × 10^18. So 10 ly is 9.4607305 × 10^19 mm.
- How many light-years are in one millimeter?
- One millimeter equals 1.057 × 10^-19 light-years, which is the reverse of the conversion above.
Related pages
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place