Convert Statcoulombs to Femtocoulombs
Convert Statcoulombs (statC) to Femtocoulombs (fC) instantly and accurately.
Conversion Formula
fC = statC × 333564.0952
About Statcoulombs
The statcoulomb (statC), also called the franklin (Fr) or ESU of charge, is the charge unit in the CGS-Gaussian system. Two point charges of 1 statC separated by 1 cm exert a force of exactly 1 dyne; 1 statC = 1 / (2.99 792 458 × 10⁹) C ≈ 3.336 × 10⁻¹⁰ C (exact, since c is a defined constant). It remains in use in electrostatics textbooks and atomic physics where working without the ε₀ factor simplifies Coulomb-law expressions.
About Femtocoulombs
The femtocoulomb (fC) equals 10⁻¹⁵ C, used in radiation detection, MEMS sensors, and microelectronics charge characterisation. A single ionising particle traversing a thin silicon strip detector typically deposits 1-80 fC; noise floors of charge-sensitive amplifiers in nuclear instrumentation are specified in femtocoulombs. 1 fC = 10⁻³ pC = 10³ aC.
Quick Reference Table
| Statcoulombs (statC) | Femtocoulombs (fC) |
|---|---|
| 1 statC | 333564 fC |
| 2 statC | 667128 fC |
| 5 statC | 1667820 fC |
| 10 statC | 3335640 fC |
| 25 statC | 8339100 fC |
| 50 statC | 16678200 fC |
| 100 statC | 33356400 fC |