🔋 Electric Charge Converter
Convert electric charge and battery-capacity units, coulomb, millicoulomb, microcoulomb, ampere-hour and milliampere-hour. 1 Ah = 3600 C; battery capacity is measured in mAh.
1 C = 1000 mC
1 coulombs = 1000 millicoulombs
1 × 1000 = 1000
1 C equals 1000 mC, so multiplying by 1000 converts the value. The result describes the exact same quantity, only the measuring stick changes.
Popular electric charge conversions
All electric charge units
| Unit | Symbol | Definition |
|---|---|---|
| Coulomb | C | The SI unit of electric charge, the charge carried by a one-ampere current in one second. It equals about 6.24×10¹⁸ elementary charges. |
| Millicoulomb | mC | One-thousandth of a coulomb (10⁻³ C). Used for small charges in electronics and capacitor work. |
| Microcoulomb | µC | One-millionth of a coulomb (10⁻⁶ C). A typical static-electricity or small-capacitor charge is in the microcoulomb range. |
| Kilocoulomb | kC | One thousand coulombs (10³ C). A large charge, a fully charged car battery moves tens of kilocoulombs over its life. |
| Ampere-hour | Ah | The charge from one ampere flowing for one hour, exactly 3600 coulombs. Car and deep-cycle battery capacity is rated in ampere-hours. |
| Milliampere-hour | mAh | One-thousandth of an ampere-hour (3.6 C). The standard rating for phone, laptop and small-battery capacity, a phone battery is around 3,000-5,000 mAh. |
Frequently asked questions
How do I convert electric charge units?
Choose your two units in the converter above and type a value, the result updates instantly, entirely in your browser. All 6 electric charge units on this page are interchangeable, so you can convert in either direction.
Which electric charge units can I convert here?
This converter supports 6 electric charge units: Coulomb (C), Millicoulomb (mC), Microcoulomb (µC), Kilocoulomb (kC) and 2 more. Pick any two to convert between them.
What is the most common electric charge conversion?
One of the most-used electric charge conversions is Milliampere-hours to Coulombs (mAh → C). Every electric charge pair we support is linked below, each with its own formula and table.
Is this Electric Charge Converter free and private?
Yes. It is free with no sign-up, uses the exact internationally defined conversion factors, and computes every result locally in your browser, nothing you type is uploaded, and the page keeps working offline.