Feet to light-years
1 foot in light-years
1 ft = 3.222 × 10^-17 ly
ly = ft × 3.221738542 × 10^-17
To convert feet to light-years, multiply by 3.221738542 × 10^-17. The table below gives the values people look up most often, and the converter works for any number.
Feet to light-years table
| Feet | Light-years |
|---|---|
| 1 ft | 3.222 × 10^-17 |
| 2 ft | 6.443 × 10^-17 |
| 3 ft | 9.665 × 10^-17 |
| 4 ft | 1.289 × 10^-16 |
| 5 ft | 1.611 × 10^-16 |
| 10 ft | 3.222 × 10^-16 |
| 15 ft | 4.833 × 10^-16 |
| 20 ft | 6.443 × 10^-16 |
| 25 ft | 8.054 × 10^-16 |
| 30 ft | 9.665 × 10^-16 |
| 40 ft | 1.289 × 10^-15 |
| 50 ft | 1.611 × 10^-15 |
| 75 ft | 2.416 × 10^-15 |
| 100 ft | 3.222 × 10^-15 |
| 250 ft | 8.054 × 10^-15 |
| 500 ft | 1.611 × 10^-14 |
| 1,000 ft | 3.222 × 10^-14 |
How the conversion works
The relationship is ly = ft × 3.221738542 × 10^-17. 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 light-years are in one foot?
- One foot equals 3.222 × 10^-17 light-years. ly = ft × 3.221738542 × 10^-17.
- How do you convert feet to light-years?
- Use ly = ft × 3.221738542 × 10^-17. So 10 ft is 3.222 × 10^-16 ly.
- How many feet are in one light-year?
- One light-year equals 3.1039142 × 10^16 feet, 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