Convert Centimeters to light years
1 centimeter = 1.057001e-18 light years · ly = cm ÷ 946,073,047,300,000,000
When you need this conversion
This conversion goes from centimeters, the everyday metric unit for body measurements, clothing, and product dimensions, to light years, the astronomical distance light travels in a year. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.
Centimeters to light years conversion table
| Centimeters (cm) | Light years (ly) |
|---|---|
| 1 cm | 1.057001e-18 ly |
| 2 cm | 2.114002e-18 ly |
| 3 cm | 3.171003e-18 ly |
| 5 cm | 5.285004e-18 ly |
| 10 cm | 1.057001e-17 ly |
| 15 cm | 1.585501e-17 ly |
| 20 cm | 2.114002e-17 ly |
| 25 cm | 2.642502e-17 ly |
| 50 cm | 5.285004e-17 ly |
| 75 cm | 7.927506e-17 ly |
| 100 cm | 1.057001e-16 ly |
| 250 cm | 2.642502e-16 ly |
| 500 cm | 5.285004e-16 ly |
| 1,000 cm | 1.057001e-15 ly |
The formula
ly = cm ÷ 946,073,047,300,000,000Because 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
Light years to centimeters →Related length conversions
- Centimeters to inches
- Centimeters to feet
- Millimeters to micrometers
- Meters to kilometers
- Kilometers to meters
- Inches to centimeters
- Feet to centimeters
- Feet to yards
- Yards to feet
- Micrometers to millimeters
- Millimeters to light years
- Centimeters to millimeters
Frequently asked questions
- How many light years are in a centimeter?
- There are 1.057001e-18 light years in 1 centimeter. The formula is ly = cm ÷ 946,073,047,300,000,000.
- How do you convert centimeters to light years?
- Use the formula ly = cm ÷ 946,073,047,300,000,000. For example, 10 centimeters equals 1.057001e-17 light years.
- Is the centimeters to light years conversion exact?
- Yes. Centimeters and light years are both units of length, related by an exact defined factor. Displayed results are rounded for readability.
- What is cm short for?
- cm is the standard symbol for centimeter (also written as centimetres). ly is the symbol for light year.