Convert centimeters to light-years
1 cm = 0.00000000000000000105700083402 ly — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
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Show this value in all 50 length units
- Gigameters Gm 1e-11
- Megameters Mm 1e-8
- Kilometers km 0.000 01
- Hectometers hm 0.0001
- Decameters dam 0.001
- Meters m 0.01
- Decimeters dm 0.1
- Centimeters cm 1
- Millimeters mm 10
- Micrometers µm 10 000
- Nanometers nm 10 000 000
- Picometers pm 10 000 000 000
- Femtometers fm 10 000 000 000 000
- Inches in 0.393 700 787 402
- Feet ft 0.032 808 398 950 1
- Yards yd 0.010 936 132 983 4
- Miles mi 0.000 006 213 711 922 37
- Nautical miles nmi 0.000 005 399 568 034 56
- Thous thou 393.700 787 402
- Hands hh 0.098 425 196 850 4
- Links li 0.049 709 695 379
- Spans span 0.043 744 531 933 5
- Cubits cubit 0.021 872 265 966 8
- Ells ell 0.008 748 906 386 7
- Fathoms ftm 0.005 468 066 491 69
- Rods rd 0.001 988 387 815 16
- Chains ch 0.000 497 096 953 79
- Furlongs fur 0.000 049 709 695 379
- Leagues lea 0.000 002 071 237 307 46
- Barleycorns barleycorn 1.181 102 362 2
- US survey feet ft (US) 0.032 808 333 333 3
- US survey miles mi (US) 0.000 006 213 699 494 95
- Ångströms Å 100 000 000
- Microns µ 10 000
- Bohr radiuss a₀ 188 972 612.591
- Planck lengths ℓₚ 6.18714249917e+32
- Astronomical units au 6.68458712227e-14
- Light-years ly 1.05700083402e-18
- Light-seconds ls 3.33564095198e-11
- Light-minutes lmin 5.55940158664e-13
- Parsecs pc 3.24077928944e-19
- Kiloparsecs kpc 3.24077928944e-22
- Megaparsecs Mpc 3.24077928944e-25
- Solar radiuss R☉ 1.43740117867e-11
- Earth radiuss R🜨 1.56961230576e-9
- Point (DTP)s pt 28.346 456 692 9
- Picas pc 2.362 204 724 41
- Scandinavian miles mil 0.000 001
- Versts вер 0.000 009 373 828 271 47
- Lis 里 0.000 02
Every row is Centimeter (cm) converted through the meter, in exact rational arithmetic.
How to convert centimeters to light-years
Multiply the number of centimeters by 0.00000000000000000105700083402 to get light-years.
Light-year: Light travelling for one Julian year (365.25 days) in vacuum — exact, since both inputs are defined values.
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 |
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 |
Frequently asked
How many light-years are in a centimeter?
One centimeter equals 1.057000834e-18 light-years (cm → ly). That figure is exact, not rounded.
How do you convert centimeters to light-years?
Multiply the number of centimeters by 0.00000000000000000105700083402 to get light-years.
What is 1 ly in centimeters?
One light-year is 9.460730473e+17 centimeters.
What is 10 cm in ly?
10 cm = 1.0570008e-17 ly.
What exactly is a light-year?
Light travelling for one Julian year (365.25 days) in vacuum — exact, since both inputs are defined values.