1 light year to miles
1 ly = 5,878,625,373,183.61 mi. Change the amount below, or read the formula and the reference table further down.
1 light year equals
miles
1 ly = 5,878,625,373,183.61 mi
The formula
Light years and miles both measure length from the same zero, so a single multiplier does the job.
mi = ly × 5,878,625,373,183.61
Going the other way? Convert miles to light years.
Light years to miles table
Values either side of 1 ly.
| Light years (ly) | Miles (mi) |
|---|---|
| -4 | -23,514,501,492,734.43 |
| -3.5 | -20,575,188,806,142.63 |
| -3 | -17,635,876,119,550.82 |
| -2.5 | -14,696,563,432,959.02 |
| -2 | -11,757,250,746,367.22 |
| -1.5 | -8,817,938,059,775.41 |
| -1 | -5,878,625,373,183.61 |
| -0.5 | -2,939,312,686,591.8 |
| 0 | 0 |
| 0.5 | 2,939,312,686,591.8 |
| 1 | 5,878,625,373,183.61 |
| 1.5 | 8,817,938,059,775.41 |
| 2 | 11,757,250,746,367.22 |
| 2.5 | 14,696,563,432,959.02 |
| 3 | 17,635,876,119,550.82 |
| 3.5 | 20,575,188,806,142.63 |
| 4 | 23,514,501,492,734.43 |
| 4.5 | 26,453,814,179,326.23 |
| 5 | 29,393,126,865,918.04 |
| 5.5 | 32,332,439,552,509.84 |
| 6 | 35,271,752,239,101.65 |
Questions people ask
- How many miles are in a light year?
- One light year equals 5,878,625,373,183.61 miles.
- How do I convert light years to miles by hand?
- Multiply the number of light years by 5,878,625,373,183.61. For a rough check, 5,878,625,373,183.61 is close enough for most everyday use.
- What is 1 light year in miles?
- 1 light year is 5,878,625,373,183.61 miles.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.