Enter a value and pick its unit (coulombs, ampere-hours, mAh, faraday), and the tool converts it to every other electric-charge unit live.
1 milliamp-hour = 3.6 coulombs, and 1 ampere-hour = 3,600 coulombs.
mAh is charge capacity. A 3,000 mAh battery holds 3 Ah = 10,800 coulombs of charge.
One faraday equals about 96,485 coulombs — the charge of one mole of electrons.