Convert Angstroms to Femtometers
Convert Angstroms (Å) to Femtometers (fm) instantly and accurately.
Conversion Formula
fm = Å × 100000
About Angstroms
An angstrom (Å) is equal to 0.1 nanometers or 10⁻¹⁰ meters, named after Swedish physicist Anders Jonas Ångström. While not an official SI unit, it remains widely used in chemistry, solid-state physics, and crystallography to express atomic distances and wavelengths. A typical atom has a diameter of 1-3 angstroms, and the spacing between atoms in crystals is commonly measured in angstroms. X-ray crystallographers use angstroms to describe molecular structures with atomic precision.
About Femtometers
A femtometer (fm) is an incredibly tiny unit equal to one quadrillionth of a meter (10⁻¹⁵ m). To put this in perspective, if an atom were the size of a football field, a femtometer would be the size of a marble. This unit is primarily used in nuclear physics to measure the size of atomic nuclei, protons, and neutrons. The proton, for example, has a diameter of about 1.7 femtometers.
Quick Reference Table
| Angstroms (Å) | Femtometers (fm) |
|---|---|
| 1 Å | 100000 fm |
| 2 Å | 200000 fm |
| 5 Å | 500000 fm |
| 10 Å | 1000000 fm |
| 25 Å | 2500000 fm |
| 50 Å | 5000000 fm |
| 100 Å | 10000000 fm |