Electric Charge Converter — Coulombs, mAh, μC, mC
Convert between 7 units of electric charge — coulombs (C), millicoulombs (mC), microcoulombs (μC), nanocoulombs (nC), picocoulombs (pC), milliamp-hours (mAh), and amp-hours (Ah). The elementary charge of one electron is 1.602 × 10⁻¹⁹ C. A smartphone battery (3,000 mAh) holds ~10,800 coulombs. Lithium-ion batteries are rated in mAh; industrial batteries in Ah.
About the Electric Charge Converter
Electric charge is a fundamental property of matter that causes electromagnetic interactions. The SI unit is the coulomb (C) — the charge carried by approximately 6.242 × 10¹⁸ electrons. In practical electronics, charge appears in battery capacity (ampere-hours, Ah), capacitor ratings, and electrostatic discharge events. The coulomb is a large unit; everyday electronics deal in microcoulombs (μC) and nanocoulombs (nC).
- ›The charge of one electron is exactly −1.602 × 10⁻¹⁹ coulombs (the elementary charge)
- ›A fully charged AA battery stores about 9,000–11,000 coulombs of charge (2.5–3 Ah)
- ›A typical lightning bolt transfers 1–5 coulombs of charge in milliseconds
- ›Electrostatic discharge (ESD) that damages electronics typically involves only microcoulombs