Convert light years to centimeters
1 ly = 9.4607 × 10^17 cm. Change the amount below, or read the formula and the reference table further down.
1 light year equals
centimeters
1 ly = 9.4607 × 10^17 cm
The formula
Light years and centimeters both measure length from the same zero, so a single multiplier does the job.
cm = ly × 9.4607 × 10^17
Going the other way? Convert centimeters to light years.
Light years to centimeters table
Common values, rounded for reading.
| Light years (ly) | Centimeters (cm) |
|---|---|
| 1 | 9.4607 × 10^17 |
| 2 | 1.8921 × 10^18 |
| 3 | 2.8382 × 10^18 |
| 4 | 3.7843 × 10^18 |
| 5 | 4.7304 × 10^18 |
| 6 | 5.6764 × 10^18 |
| 7 | 6.6225 × 10^18 |
| 8 | 7.5686 × 10^18 |
| 9 | 8.5147 × 10^18 |
| 10 | 9.4607 × 10^18 |
| 15 | 1.4191 × 10^19 |
| 20 | 1.8921 × 10^19 |
| 25 | 2.3652 × 10^19 |
| 30 | 2.8382 × 10^19 |
| 40 | 3.7843 × 10^19 |
| 50 | 4.7304 × 10^19 |
| 75 | 7.0955 × 10^19 |
| 100 | 9.4607 × 10^19 |
| 250 | 2.3652 × 10^20 |
| 500 | 4.7304 × 10^20 |
| 1,000 | 9.4607 × 10^20 |
Questions people ask
- How many centimeters are in a light year?
- One light year equals 9.4607 × 10^17 centimeters.
- How do I convert light years to centimeters by hand?
- Multiply the number of light years by 9.4607 × 10^17. For a rough check, 9.4607 × 10^17 is close enough for most everyday use.
- What is 1 light year in centimeters?
- 1 light year is 9.4607 × 10^17 centimeters.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.