How to convert atomic units of length to feet (US survey)
1 a.u. of length is equal to 1.736142233 × 10⁻¹⁰ feet (US survey), and 1 foot (us survey) is equal to 5,759,896,748 atomic units of length. To convert, multiply by the conversion factor:
feet (US survey) = atomic units of length × 1.736142233 × 10⁻¹⁰
feet (US survey) = atomic units of length ÷ 5,759,896,748Example: convert 1 a₀ to ft (US): 1 × 1.736142233 × 10⁻¹⁰ = 1.736142233 × 10⁻¹⁰ ft (US).
A.u. of Length to Foot (US Survey) conversion table
| A.u. of Length (a₀) | Foot (US Survey) (ft (US)) |
|---|---|
| 0.01 a₀ | 1.736142233 × 10⁻¹² ft (US) |
| 0.1 a₀ | 1.736142233 × 10⁻¹¹ ft (US) |
| 1 a₀ | 1.736142233 × 10⁻¹⁰ ft (US) |
| 2 a₀ | 3.472284466 × 10⁻¹⁰ ft (US) |
| 3 a₀ | 5.208426698 × 10⁻¹⁰ ft (US) |
| 5 a₀ | 8.680711164 × 10⁻¹⁰ ft (US) |
| 10 a₀ | 1.736142233 × 10⁻⁹ ft (US) |
| 20 a₀ | 3.472284466 × 10⁻⁹ ft (US) |
| 50 a₀ | 8.680711164 × 10⁻⁹ ft (US) |
| 100 a₀ | 1.736142233 × 10⁻⁸ ft (US) |
| 250 a₀ | 4.340355582 × 10⁻⁸ ft (US) |
| 500 a₀ | 8.680711164 × 10⁻⁸ ft (US) |
| 1,000 a₀ | 1.736142233 × 10⁻⁷ ft (US) |
About the a.u. of length
The atomic unit of length is the Bohr radius, about 5.29 × 10⁻¹¹ m: the most probable distance between the proton and electron in a hydrogen atom.
Symbol: a₀ · 1 a₀ = 5.291772109 × 10⁻¹¹ m · Category: Atomic & physics
About the foot (us survey)
The US survey foot is exactly 1200/3937 m (about 0.3048006 m), two parts per million longer than the international foot. It was officially retired at the end of 2022 but remains in older land records and state plane coordinates.
Symbol: ft (US) · 1 ft (US) = 0.3048006096 m · Category: US survey units