Convert Elementary charge to Coulombs
Convert Elementary charge (e) to Coulombs (C) instantly and accurately.
Conversion Formula
C = e × 1.602176634e-19
About Elementary charge
The elementary charge (e) is the magnitude of charge on a single proton or electron, defined exactly as 1.602 176 634 × 10⁻¹⁹ C in the 2019 SI revision. It is the quantum of electric charge - the smallest freely occurring charge in nature - and underpins all atomic and subatomic physics. A current of 1 A corresponds to 6.241 509 × 10¹⁸ elementary charges flowing per second.
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
| Elementary charge (e) | Coulombs (C) |
|---|---|
| 1 e | 1.602 × 10-19 C |
| 2 e | 3.204 × 10-19 C |
| 5 e | 8.011 × 10-19 C |
| 10 e | 1.602 × 10-18 C |
| 25 e | 4.005 × 10-18 C |
| 50 e | 8.011 × 10-18 C |
| 100 e | 1.602 × 10-17 C |