Convert Light Year to Centimeter
Use this free converter to change light years (ly) into centimeters (cm). Light year and centimeter both measure length. As a quick reference, 1 ly equals 9.4607e+17 cm, and 1 cm equals 1.0570e-18 ly.
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Centimeter (cm)
9.4607e+17
1 ly = 9.4607e+17 cm
Length conversion table
| Light Year | Centimeter |
|---|---|
| 0.01 | 9.4607e+15 |
| 0.1 | 9.4607e+16 |
| 0.5 | 4.7304e+17 |
| 1 | 9.4607e+17 |
| 2 | 1.8921e+18 |
| 3 | 2.8382e+18 |
| 5 | 4.7304e+18 |
| 10 | 9.4607e+18 |
| 20 | 1.8921e+19 |
| 25 | 2.3652e+19 |
| 50 | 4.7304e+19 |
| 100 | 9.4607e+19 |
| 1,000 | 9.4607e+20 |
How to convert Light Year to Centimeter
Multiply the light year value by 9.4607e+17 to get centimeters.
- Enter the number of light years you want to convert.
- The converter instantly shows the equivalent value in centimeters.
- Worked example: 15 ly × 9.4607e+17 = 1.4191e+19 cm.
- Use the swap button to reverse the conversion (centimeter to light year).
About these units
Light Year (ly)
- Definition
- A light-year (ly) is the distance light travels in one year in a vacuum, about 9.46 trillion kilometers.
- History
- The concept arose in the 19th century as astronomers sought an intuitive way to express the vast distances between stars.
- Current use
- Light-years express distances to stars and galaxies in astronomy and popular science.
Centimeter (cm)
- Definition
- A centimeter (cm) is one hundredth of a meter, a convenient metric unit for everyday measurements like height and paper sizes.
- History
- It dates from the original metric system and uses the SI prefix "centi-" (one hundredth).
- Current use
- Centimeters are used for body measurements, rainfall, screen and print dimensions, and school maths across the metric world.
Frequently asked questions
How many centimeters are in a light year?
There are 9.4607e+17 cm in 1 ly. To convert, multiply the number of light years by 9.4607e+17.
How do I convert light years to centimeters?
Multiply the light year value by 9.4607e+17 to get centimeters. For example, 10 ly = 9.4607e+18 cm.
Is this light year-to-centimeter converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Light Year to other length units
| Unit | 1 Light Year equals |
|---|---|
| Meter (m) | 9.4607e+15 m |
| Kilometer (km) | 9.4607e+12 km |
| Centimeter (cm) | 9.4607e+17 cm |
| Millimeter (mm) | 9.4607e+18 mm |
| Micrometer (µm) | 9.4607e+21 µm |
| Nanometer (nm) | 9.4607e+24 nm |
| Mile (mi) | 5.8786e+12 mi |
| Yard (yd) | 1.0346e+16 yd |
| Foot (ft) | 3.1039e+16 ft |
| Inch (in) | 3.7247e+17 in |
| Nautical Mile (nmi) | 5.1084e+12 nmi |