How to convert femtometers to atomic units of length
1 femtometer is equal to 0.00001889726125 atomic units of length, and 1 a.u. of length is equal to 52,917.72109 femtometers. To convert, multiply by the conversion factor:
atomic units of length = femtometers × 0.00001889726125
atomic units of length = femtometers ÷ 52,917.72109Example: convert 15 fm to a₀: 15 × 0.00001889726125 = 0.0002834589187 a₀.
Femtometer to A.u. of Length conversion table
| Femtometer (fm) | A.u. of Length (a₀) |
|---|---|
| 0.01 fm | 1.889726125 × 10⁻⁷ a₀ |
| 0.1 fm | 0.000001889726125 a₀ |
| 1 fm | 0.00001889726125 a₀ |
| 2 fm | 0.00003779452249 a₀ |
| 3 fm | 0.00005669178374 a₀ |
| 5 fm | 0.00009448630623 a₀ |
| 10 fm | 0.0001889726125 a₀ |
| 20 fm | 0.0003779452249 a₀ |
| 50 fm | 0.0009448630623 a₀ |
| 100 fm | 0.001889726125 a₀ |
| 250 fm | 0.004724315312 a₀ |
| 500 fm | 0.009448630623 a₀ |
| 1,000 fm | 0.01889726125 a₀ |
About the femtometer
A femtometer is 10⁻¹⁵ meters, the scale of atomic nuclei. A proton has a radius of about 0.84 fm.
Symbol: fm · 1 fm = 1 × 10⁻¹⁵ m · Category: Metric (SI)
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