Authoritative definitions of the International System of Units and SI prefixes.
Unit conversion
Milliampere-hours to Coulombs Converter
1 mAh = 3.6 C. Enter a value to convert mAh to C, then use the formula and table below. Displayed digits may be rounded.
Electrical unitsInstant result
Decimals
Formula result = input × 3.6 ÷ 1. 1 mAh = 3.6 C
Nonzero results too small for the selected decimal places use scientific notation.
Nonzero results too small for the selected decimal places use scientific notation.
Common examples
One value, several units
Coulombs3.6 C
Millicoulombs3,600 mC
Microcoulombs3,600,000 µC
Ampere-hours0.001 Ah
Conversion table
| mAh | C |
|---|---|
| 1 mAh | 3.6 C |
| 2 mAh | 7.2 C |
| 5 mAh | 18 C |
| 10 mAh | 36 C |
| 25 mAh | 90 C |
| 50 mAh | 180 C |
| 100 mAh | 360 C |
Conversion chart
1 mAh3.6 C
5 mAh18 C
10 mAh36 C
25 mAh90 C
50 mAh180 C
Worked example
1 mAh = 3.6 C. Apply the selected conversion formula to other input values.
Unit definition
Milliampere-hours (mAh) One milliampere-hours equals 3.6 coulomb.
Unit history
Milliampere-hours is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert mAh to coulomb.
3. Convert the base value to C and apply your display precision.
Understand the result before using it
Milliampere-hours to Coulombs converts a value measured in Milliampere-hours (mAh) into the equivalent value in Coulombs (C). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 3.6 ÷ 1
Assumptions
- Milliampere-hours and Coulombs represent the same electric charge quantity.
- The input is expressed in mAh; the output is expressed in C.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 mAh = 3.6 C. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a mAh measurement in a document that expects C.
- Compare a milliampere-hours value with a value reported in coulombs.
- Check the mAh to C arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse mAh with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Milliampere-hours to Coulombs?
result = input × 3.6 ÷ 1. Input is in mAh; result is in C. 1 mAh = 3.6 C. The displayed digits may be rounded.
What is 1 mAh in C?
1 mAh = 3.6 C. The displayed digits may be rounded.
Can I reverse the mAh to C conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts C back to mAh.
Is the Milliampere-hours to Coulombs result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.