Convert Coulombs to Femtocoulombs
Convert Coulombs (C) to Femtocoulombs (fC) instantly and accurately.
Conversion Formula
fC = C × 1000000000000000
About Coulombs
The coulomb (C) is the SI derived unit of electric charge, equal to the charge transported by a current of 1 A in 1 s. In the 2019 SI revision it is fixed exactly via the elementary charge: 1 C = 1 / (1.602 176 634 × 10⁻¹⁹) e ≈ 6.241 × 10¹⁸ e. Practical benchmarks: a 1 Ah battery stores 3 600 C; a lightning bolt transfers 1-20 C.
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
| Coulombs (C) | Femtocoulombs (fC) |
|---|---|
| 1 C | 1 × 1015 fC |
| 2 C | 2 × 1015 fC |
| 5 C | 5 × 1015 fC |
| 10 C | 1 × 1016 fC |
| 25 C | 2.5 × 1016 fC |
| 50 C | 5 × 1016 fC |
| 100 C | 1 × 1017 fC |