Convert light years to inches
1 ly = 3.7247 × 10^17 in. Change the amount below, or read the formula and the reference table further down.
1 light year equals
inches
1 ly = 3.7247 × 10^17 in
The formula
Light years and inches both measure length from the same zero, so a single multiplier does the job.
in = ly × 3.7247 × 10^17
Going the other way? Convert inches to light years.
Light years to inches table
Common values, rounded for reading.
| Light years (ly) | Inches (in) |
|---|---|
| 1 | 3.7247 × 10^17 |
| 2 | 7.4494 × 10^17 |
| 3 | 1.1174 × 10^18 |
| 4 | 1.4899 × 10^18 |
| 5 | 1.8623 × 10^18 |
| 6 | 2.2348 × 10^18 |
| 7 | 2.6073 × 10^18 |
| 8 | 2.9798 × 10^18 |
| 9 | 3.3522 × 10^18 |
| 10 | 3.7247 × 10^18 |
| 15 | 5.5870 × 10^18 |
| 20 | 7.4494 × 10^18 |
| 25 | 9.3117 × 10^18 |
| 30 | 1.1174 × 10^19 |
| 40 | 1.4899 × 10^19 |
| 50 | 1.8623 × 10^19 |
| 75 | 2.7935 × 10^19 |
| 100 | 3.7247 × 10^19 |
| 250 | 9.3117 × 10^19 |
| 500 | 1.8623 × 10^20 |
| 1,000 | 3.7247 × 10^20 |
Questions people ask
- How many inches are in a light year?
- One light year equals 3.7247 × 10^17 inches.
- How do I convert light years to inches by hand?
- Multiply the number of light years by 3.7247 × 10^17. For a rough check, 3.7247 × 10^17 is close enough for most everyday use.
- What is 1 light year in inches?
- 1 light year is 3.7247 × 10^17 inches.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.