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Millicoulomb (mC)

One thousandth of a coulomb.

What is a millicoulomb?

Symbol
mC
Quantity
Electric Charge
Unit system
SI
Definition
One thousandth of a coulomb.
Exact
Yes, the value is exact by definition
Source
SI Brochure, 9th edition (BIPM, 2019)

Common applications

Used for charge in capacitor discharges, electroplating experiments and small laboratory measurements.

Millicoulomb in other electric charge units

Millicoulomb quick reference

Millicoulomb in other units
MillicoulombCoulombMilliampere-hourMicrocoulomb
1 mC= 0.001 C≈ 0.0002777777778 mAh= 1000 µC
10 mC= 0.01 C≈ 0.002777777778 mAh= 10000 µC
100 mC= 0.1 C≈ 0.02777777778 mAh= 100000 µC
1000 mC= 1 C≈ 0.2777777778 mAh= 1000000 µC

Where the millicoulomb fits

The next smaller electric charge unit is the microcoulomb (µC). 1 mC = 1000 µC, and 1 µC = 0.001 mC.

The next larger electric charge unit is the coulomb (C). 1 mC = 0.001 C, and 1 C = 1000 mC.

Frequently asked questions

How many coulombs are in one millicoulomb?
One millicoulomb = 0.001 C (coulombs).
How many milliampere-hours are in one millicoulomb?
One millicoulomb ≈ 0.0002777777778 mAh (milliampere-hours).
How many microcoulombs are in one millicoulomb?
One millicoulomb = 1000 µC (microcoulombs).