Convert Statcoulombs to Coulombs
Convert Statcoulombs (statC) to Coulombs (C) instantly and accurately.
Conversion Formula
C = statC × 3.335640952e-10
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 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.
Quick Reference Table
| Statcoulombs (statC) | Coulombs (C) |
|---|---|
| 1 statC | 3.336 × 10-10 C |
| 2 statC | 6.671 × 10-10 C |
| 5 statC | 1.668 × 10-9 C |
| 10 statC | 3.336 × 10-9 C |
| 25 statC | 8.339 × 10-9 C |
| 50 statC | 1.668 × 10-8 C |
| 100 statC | 3.336 × 10-8 C |