Popular electric charge conversions
About electric charge units
Electric charge is current multiplied by time: one coulomb is one ampere flowing for one second. Battery capacity is often stated in ampere-hours or milliampere-hours (1 mAh = 3.6 C). Since 2019 the elementary charge is exactly 1.602176634 × 10⁻¹⁹ C.
Electric Charge unit reference
| Unit | Symbol | Value in C | System |
|---|---|---|---|
| Coulomb | C | 1 C | SI |
| Millicoulomb | mC | 0.001 C | SI |
| Microcoulomb | µC | 0.000001 C | SI |
| Nanocoulomb | nC | 1×10⁻⁹ C | SI |
| Picocoulomb | pC | 1×10⁻¹² C | SI |
| Kilocoulomb | kC | 1,000 C | SI |
| Ampere-hour | Ah | 3,600 C | Metric |
| Milliampere-hour | mAh | 3.6 C | Metric |
| Faraday | F | 96,485.332 C | Other |
| Elementary charge | e | 1.6021766×10⁻¹⁹ C | Other |
| Abcoulomb | abC | 10 C | CGS |
| Statcoulomb | statC | 3.335641×10⁻¹⁰ C | CGS |
Frequently asked questions
What is the SI unit of electric charge?
This converter uses the coulomb (C) as its reference unit; every other unit is defined relative to it.
How many electric charge units can I convert?
12 units are supported here, across SI, Metric, Other, CGS systems. Every pair can be converted in both directions.
Does this electric charge converter work offline?
Yes. Once the page has loaded, every calculation runs locally in your browser — nothing is sent to a server.