Enter a charge value and choose the units to convert between coulombs and its milli-, micro-, nano-, and picocoulomb multiples.
How to Use the Charge Conversion Calculators
Enter a value, pick the unit it's currently in from the "from" dropdown, and pick the unit you want from the "to" dropdown — coulombs, millicoulombs, microcoulombs, nanocoulombs, or picocoulombs. The converted value updates as soon as you change any field, and the swap button flips the two units in one click.
Electric charge almost never shows up in whole coulombs outside a physics textbook — a coulomb is a genuinely enormous amount of charge, roughly what flows past a point in one second at one amp. Everything practical sits several orders of magnitude below that, which is exactly why the SI prefix system exists.
value in base (C) = value × unit factor
result = value in base ÷ target unit factor
1 mC = 10⁻³ C
1 µC = 10⁻⁶ C
1 nC = 10⁻⁹ C
1 pC = 10⁻¹² CA typical static shock from touching a doorknob after walking across carpet carries somewhere around 10–30 microcoulombs — barely a rounding error next to the coulomb a lightning strike moves in a fraction of a second. A charged capacitor in a camera flash circuit sits in the millicoulomb range; the charge on a single electron, at the opposite extreme, is about 1.602 × 10⁻¹⁹ coulombs — far below even picocoulombs, and not something this calculator's unit list needs to reach.
Each step between units here is exactly a factor of a thousand, same as grams to kilograms or meters to kilometers — no rounding, no approximation, just SI prefixes doing what they're built to do.