Convert Light Year to Inch
Use this free converter to change light years (ly) into inches (in). Light year and inch both measure length. As a quick reference, 1 ly equals 3.7247e+17 in, and 1 in equals 2.6848e-18 ly.
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Inch (in)
3.7247e+17
1 ly = 3.7247e+17 in
Length conversion table
| Light Year | Inch |
|---|---|
| 0.01 | 3.7247e+15 |
| 0.1 | 3.7247e+16 |
| 0.5 | 1.8623e+17 |
| 1 | 3.7247e+17 |
| 2 | 7.4494e+17 |
| 3 | 1.1174e+18 |
| 5 | 1.8623e+18 |
| 10 | 3.7247e+18 |
| 20 | 7.4494e+18 |
| 25 | 9.3117e+18 |
| 50 | 1.8623e+19 |
| 100 | 3.7247e+19 |
| 1,000 | 3.7247e+20 |
How to convert Light Year to Inch
Multiply the light year value by 3.7247e+17 to get inches.
- Enter the number of light years you want to convert.
- The converter instantly shows the equivalent value in inches.
- Worked example: 15 ly × 3.7247e+17 = 5.5870e+18 in.
- Use the swap button to reverse the conversion (inch 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.
Inch (in)
- Definition
- An inch (in) is an imperial unit of length equal to exactly 2.54 centimeters, with twelve inches making a foot.
- History
- Originally the width of a thumb, the inch was standardised to 25.4 mm internationally in 1959.
- Current use
- Inches measure screen sizes, tyre and pipe dimensions, and everyday lengths in the US and UK.
Frequently asked questions
How many inches are in a light year?
There are 3.7247e+17 in in 1 ly. To convert, multiply the number of light years by 3.7247e+17.
How do I convert light years to inches?
Multiply the light year value by 3.7247e+17 to get inches. For example, 10 ly = 3.7247e+18 in.
Is this light year-to-inch 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 |