Convert light-years to centimeters
1 ly = 946073047258000000 cm — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
9.46073047258e+17cm
Exact decimal: 946073047258080000
1 ly = 946073047258000000 cm
How to convert light-years to centimeters
Multiply the number of light-years by 946073047258000000 to get centimeters.
The exact factor is 946073047258080000 .
Light-year: Light travelling for one Julian year (365.25 days) in vacuum — exact, since both inputs are defined values.
Light-year to Centimeter conversion table
| Light-years (ly) | Centimeters (cm) |
|---|---|
| 1 ly | 9.4607305e+17 |
| 2 ly | 1.8921461e+18 |
| 3 ly | 2.8382191e+18 |
| 5 ly | 4.7303652e+18 |
| 10 ly | 9.4607305e+18 |
| 20 ly | 1.8921461e+19 |
| 25 ly | 2.3651826e+19 |
| 50 ly | 4.7303652e+19 |
| 100 ly | 9.4607305e+19 |
| 250 ly | 2.3651826e+20 |
| 500 ly | 4.7303652e+20 |
| 1000 ly | 9.4607305e+20 |
Centimeter to Light-year conversion table
| Centimeters (cm) | Light-years (ly) |
|---|---|
| 1 cm | 1.0570008e-18 |
| 2 cm | 2.1140017e-18 |
| 3 cm | 3.1710025e-18 |
| 5 cm | 5.2850042e-18 |
| 10 cm | 1.0570008e-17 |
| 20 cm | 2.1140017e-17 |
| 25 cm | 2.6425021e-17 |
| 50 cm | 5.2850042e-17 |
| 100 cm | 1.0570008e-16 |
| 250 cm | 2.6425021e-16 |
| 500 cm | 5.2850042e-16 |
| 1000 cm | 1.0570008e-15 |
Frequently asked
How many centimeters are in a light-year?
One light-year equals 9.460730473e+17 centimeters (ly → cm). That figure is exact, not rounded.
How do you convert light-years to centimeters?
Multiply the number of light-years by 946073047258000000 to get centimeters.
What is 1 cm in light-years?
One centimeter is 1.057000834e-18 light-years.
What is 10 ly in cm?
10 ly = 9.4607305e+18 cm.
What exactly is a light-year?
Light travelling for one Julian year (365.25 days) in vacuum — exact, since both inputs are defined values.