Electrical
CtomC
Convert coulombs (C) to millicoulombs (mC).
Factor1 C = 1000 mC
Converter
C
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mC
Rendered to 6 significant figures.
Formula
Formula
mC = C × 1000
Multiply any value in coulombs by 1000 to obtain the value in millicoulombs.
Worked example
Convert 1 C to mC.
- 01Start with 1 C.
- 02Multiply by the conversion factor: 1 × 1000 = 1000 mC.
Result1 C = 1000 mC
Conversion table
| C | mC |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from C to mC?
1 C equals 1000 mC. To convert, multiply the value in coulombs by 1000.
How do I convert 1 C to mC?
1 C = 1000 mC. For any value, multiply by 1000.
How do I convert mC back to C?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 mC = 0.001 C.
When would I need to convert coulomb to millicoulomb?
Electric-charge conversions between C and mC appear in battery capacity specification (A·h, mA·h), electroplating and electrochemistry (coulombs of charge transferred), and capacitor energy calculations. 1 A·h is exactly 3600 C — the conversion is a linear factor and does not depend on voltage, current profile or chemistry.
Is the conversion exact?
Yes. Both C and mC are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).