Charge Converter

• Coulombs to Millicoulombs1 C = 1,000 mC
• Millicoulombs to Coulombs1 mC = 0.001 C
• Coulombs to Ampere Hours1 C = 0.000277778 Ah
• Coulombs to Milliampere Hours1 C = 0.277778 mAh
• Coulombs to Elementary Charge1 C = 6.2415e+18 e
• Coulombs to Faradays1 C = 1.0364e-5 F
• Millicoulombs to Ampere Hours1 mC = 2.7778e-7 Ah
• Millicoulombs to Milliampere Hours1 mC = 0.000277778 mAh
• Millicoulombs to Elementary Charge1 mC = 6.2415e+15 e
• Millicoulombs to Faradays1 mC = 1.0364e-8 F
• Ampere Hours to Coulombs1 Ah = 3,600 C
• Ampere Hours to Millicoulombs1 Ah = 3.6e+6 mC

All 9 charge units are converted through a single base unit, so any unit can be converted to any other. Enter a value, choose the units and press Convert, or open a conversion page for the exact factor and a reference table.

For example, 1 coulombs (C) = 1,000 millicoulombs (mC).

Coulombs (C)

The coulomb is the SI unit of electric charge: the charge carried by a current of one ampere in one second, about 6.24 × 10¹⁸ elementary charges.

Ampere Hours (Ah)

An ampere-hour is the charge delivered by one ampere flowing for one hour, exactly 3,600 coulombs. Car and deep-cycle batteries are rated in Ah.

Milliampere Hours (mAh)

A milliampere-hour is one thousandth of an ampere-hour (3.6 coulombs). Phone and laptop batteries are rated in mAh.

Faradays (F)

A faraday is the charge of one mole of electrons, about 96,485 coulombs, used in electrochemistry.

Elementary Charge (e)

The elementary charge is the charge of a single proton, and the magnitude of an electron's charge: exactly 1.602176634 × 10⁻¹⁹ coulombs.

• Electric CurrentAmperes, milliamperes and more.
• Electric ResistanceOhms, kilohms, megohms and more.
• Surface Charge DensityCoulombs per square meter and more.