Convert Coulombs to Statcoulombs
Convert Coulombs (C) to Statcoulombs (statC) instantly and accurately.
Conversion Formula
statC = C × 2997924580
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 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.
Quick Reference Table
| Coulombs (C) | Statcoulombs (statC) |
|---|---|
| 1 C | 2.998 × 109 statC |
| 2 C | 5.996 × 109 statC |
| 5 C | 1.499 × 1010 statC |
| 10 C | 2.998 × 1010 statC |
| 25 C | 7.495 × 1010 statC |
| 50 C | 1.499 × 1011 statC |
| 100 C | 2.998 × 1011 statC |