Light-years to feet
1 light-year in feet
1 ly = 3.1039142 × 10^16 ft
ft = ly × 3.103914197 × 10^16
To convert light-years to feet, multiply by 3.103914197 × 10^16. The table below gives the values people look up most often, and the converter works for any number.
Light-years to feet table
| Light-years | Feet |
|---|---|
| 1 ly | 3.1039142 × 10^16 |
| 2 ly | 6.2078284 × 10^16 |
| 3 ly | 9.3117426 × 10^16 |
| 4 ly | 1.2415657 × 10^17 |
| 5 ly | 1.5519571 × 10^17 |
| 10 ly | 3.1039142 × 10^17 |
| 15 ly | 4.6558713 × 10^17 |
| 20 ly | 6.2078284 × 10^17 |
| 25 ly | 7.7597855 × 10^17 |
| 30 ly | 9.3117426 × 10^17 |
| 40 ly | 1.2415657 × 10^18 |
| 50 ly | 1.5519571 × 10^18 |
| 75 ly | 2.3279356 × 10^18 |
| 100 ly | 3.1039142 × 10^18 |
| 250 ly | 7.7597855 × 10^18 |
| 500 ly | 1.5519571 × 10^19 |
| 1,000 ly | 3.1039142 × 10^19 |
How the conversion works
The relationship is ft = ly × 3.103914197 × 10^16. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.
Foot: Plural is "feet".
Common questions
- How many feet are in one light-year?
- One light-year equals 3.1039142 × 10^16 feet. ft = ly × 3.103914197 × 10^16.
- How do you convert light-years to feet?
- Use ft = ly × 3.103914197 × 10^16. So 10 ly is 3.1039142 × 10^17 ft.
- How many light-years are in one foot?
- One foot equals 3.222 × 10^-17 light-years, which is the reverse of the conversion above.
- Is there more than one kind of foot?
- Plural is "feet".
Related pages
Sources
- Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
- Calculated on this page — At One Place