Convert Elementary Charge to Coulomb
Live bidirectional calculator for Elementary Charges (e) and Coulombs (C) with verified formula and conversion charts.
Electric Charge8 units
How the Calculation Works (Linear Scaling)
Since 1 Coulomb = 6.241509e+18 Elementary Charges, divide the value in Elementary Charges by 6.241509e+18.
Elementary Charge to Coulomb Conversion Table
Precomputed values for quick reference and printing.
| Elementary Charge | Coulomb |
|---|---|
| 1 e | 1.6022e-19 C |
| 2 e | 3.2044e-19 C |
| 3 e | 4.8065e-19 C |
| 4 e | 6.4087e-19 C |
| 5 e | 8.0109e-19 C |
| 6 e | 9.6131e-19 C |
| 7 e | 1.1215e-18 C |
| 8 e | 1.2817e-18 C |
| 9 e | 1.442e-18 C |
| 10 e | 1.6022e-18 C |
| 15 e | 2.4033e-18 C |
| 20 e | 3.2044e-18 C |
| 25 e | 4.0054e-18 C |
| 30 e | 4.8065e-18 C |
| 40 e | 6.4087e-18 C |
| 50 e | 8.0109e-18 C |
| 75 e | 1.2016e-17 C |
| 100 e | 1.6022e-17 C |
| Coulomb | Elementary Charge |
|---|---|
| 1 C | 6.2415e+18 e |
| 2 C | 1.2483e+19 e |
| 3 C | 1.8725e+19 e |
| 4 C | 2.4966e+19 e |
| 5 C | 3.1208e+19 e |
| 6 C | 3.7449e+19 e |
| 7 C | 4.3691e+19 e |
| 8 C | 4.9932e+19 e |
| 9 C | 5.6174e+19 e |
| 10 C | 6.2415e+19 e |
| 15 C | 9.3623e+19 e |
| 20 C | 1.2483e+20 e |
| 25 C | 1.5604e+20 e |
| 30 C | 1.8725e+20 e |
| 40 C | 2.4966e+20 e |
| 50 C | 3.1208e+20 e |
| 75 C | 4.6811e+20 e |
| 100 C | 6.2415e+20 e |
๐ Standard Benchmark Reference Values
Exact 2019 SI defining constant (1 e = 1.602176634 ร 10โปยนโน C).
Exact RatioAbout Elementary Charge (e)
The magnitude of the electric charge carried by a single proton or electron, defined in the 2019 SI redefinition as exactly 1.602176634 ร 10โปยนโน C. Stated as an unsigned magnitude.
History: First measured by Robert Millikan in the oil drop experiment (1909); fixed as an exact defining constant by the 26th CGPM in 2019.
Common Uses: Particle physics, quantum electrodynamics, semiconductor bandgap analysis, and chemistry ion valency.
About Coulomb (C)
The SI base unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere (1 C = 1 Aยทs).
History: Named after French physicist Charles-Augustin de Coulomb who formulated Coulombโs law of electrostatic force in 1785.
Common Uses: Standard measure of electrostatic charge, capacitor stored charge (Q = CV), and chemical electroplating.
โ Frequently Asked Questions
How many Coulombs are in 1 Elementary Charge?
There are exactly 1.602177e-19 Coulombs in 1 Elementary Charge (1 e = 1.602177e-19 C).
What is the formula to convert Elementary Charge to Coulomb?
The formula is: Coulomb = Elementary Charge / 6.241509e+18. Since 1 Coulomb = 6.241509e+18 Elementary Charges, divide the value in Elementary Charges by 6.241509e+18.
How do I convert 1 e to C manually?
To convert 1 e to C: apply the formula Coulomb = Elementary Charge / 6.241509e+18. Substituting gives: 1 / 6.241509e+18 = 1.6022e-19 C.