Convert Light years to nanometers
1 light year = 9.460730e24 nanometers · nm = ly × 9,460,730,473,000,000,000,000,000
When you need this conversion
This conversion goes from light years, the astronomical distance light travels in a year, to nanometers, the scale of semiconductors and light wavelengths. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Light years to nanometers conversion table
| Light years (ly) | Nanometers (nm) |
|---|---|
| 1 ly | 9.460730e24 nm |
| 2 ly | 1.892146e25 nm |
| 3 ly | 2.838219e25 nm |
| 5 ly | 4.730365e25 nm |
| 10 ly | 9.460730e25 nm |
| 15 ly | 1.419110e26 nm |
| 20 ly | 1.892146e26 nm |
| 25 ly | 2.365183e26 nm |
| 50 ly | 4.730365e26 nm |
| 75 ly | 7.095548e26 nm |
| 100 ly | 9.460730e26 nm |
| 250 ly | 2.365183e27 nm |
| 500 ly | 4.730365e27 nm |
| 1,000 ly | 9.460730e27 nm |
The formula
nm = ly × 9,460,730,473,000,000,000,000,000Because both units measure length, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.
Convert the other way
Nanometers to light years →Related length conversions
- Millimeters to micrometers
- Centimeters to inches
- Centimeters to feet
- Meters to kilometers
- Kilometers to meters
- Inches to centimeters
- Feet to centimeters
- Feet to yards
- Yards to feet
- Micrometers to millimeters
- Millimeters to nanometers
- Centimeters to nanometers
Frequently asked questions
- How many nanometers are in a light year?
- There are 9.460730e24 nanometers in 1 light year. The formula is nm = ly × 9,460,730,473,000,000,000,000,000.
- How do you convert light years to nanometers?
- Use the formula nm = ly × 9,460,730,473,000,000,000,000,000. For example, 10 light years equals 9.460730e25 nanometers.
- Is the light years to nanometers conversion exact?
- Yes. Light years and nanometers are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
- What is ly short for?
- ly is the standard symbol for light year. nm is the symbol for nanometer.