Convert elementary charge to coulomb instantly. Type in either field — results update live.
Selected e values converted to C using the exact factor from this tool.
| e | C |
|---|---|
| 0.01 | 0 |
| 0.1 | 0.00000000000000000002 |
| 1 | 0.00000000000000000016 |
| 2 | 0.00000000000000000032 |
| 3 | 0.00000000000000000048 |
| 5 | 0.0000000000000000008 |
| 10 | 0.0000000000000000016 |
| 20 | 0.0000000000000000032 |
| 50 | 0.00000000000000000801 |
| 100 | 0.00000000000000001602 |
| 1,000 | 0.00000000000000016022 |
Exact conversion factors in both directions, plus a worked example.
1 e = 1.602176634e-19 C
1 C = 6.241509074e+18 e
To convert elementary charge to coulomb, multiply by 1.602176634e-19.
To convert coulomb to elementary charge, multiply by 6.241509074e+18.
Example: convert 10 e to C
10 × 1.602176634e-19 = 1.602176634e-18 C
Short background on the units used in this conversion.
The elementary charge e equals exactly 1.602176634×10⁻¹⁹ coulomb — the magnitude of charge on a single proton or electron (2019 SI exact value).
Elementary charge is the quantum of charge in physics problems, semiconductor carrier counts, and chemistry stoichiometry.
The coulomb (C) is the SI unit of electric charge — one ampere of current for one second (A·s).
Coulombs quantify capacitor charge, electrostatic charge transfer, and total charge moved in a circuit over time.
C = e × 0.00000000000000000016e = C × 6,241,509,074,460,763,000, using the same exact factors as this converter.