Convert Femtometers to Nanometers
Convert Femtometers (fm) to Nanometers (nm) instantly and accurately.
Conversion Formula
nm = fm × 1.000000000e-6
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.
About Nanometers
A nanometer (nm) is one billionth of a meter (10⁻⁹ m), roughly the width of 3-4 atoms placed side by side. This scale is where nanotechnology operates and is visible light wavelengths are measured. Visible light ranges from about 400 nm (violet) to 700 nm (red). DNA molecules are about 2.5 nm wide, and modern computer processors have transistors as small as 3-5 nm. A human hair is approximately 80,000-100,000 nanometers thick, making one nanometer incredibly tiny by human standards.
Quick Reference Table
| Femtometers (fm) | Nanometers (nm) |
|---|---|
| 1 fm | 1 × 10-6 nm |
| 2 fm | 2 × 10-6 nm |
| 5 fm | 5 × 10-6 nm |
| 10 fm | 1 × 10-5 nm |
| 25 fm | 2.5 × 10-5 nm |
| 50 fm | 5 × 10-5 nm |
| 100 fm | 1 × 10-4 nm |