Milliampere-hours to Coulombs Converter
Enter the electric charge in milliampere-hours below to convert it to coulombs.
Convert Milliampere-hours to Coulombs
Enter a value in milliampere-hours (mAh) to convert to coulombs (C).
Milliampere-hour to Coulomb Conversion Table
Table showing various milliampere-hour measurements converted to coulombs. Click any preset value or arrow to load it into the converter.
How to Convert Milliampere-hours to Coulombs
To convert milliampere-hours to coulombs, multiply the electric charge by the following conversion ratio: 3.6 coulombs/milliampere-hour.
Since one milliampere-hour is equal to 3.6 coulombs, you can use this simple formula to convert:
The electric charge in coulombs is equal to the electric charge in milliampere-hours multiplied by 3.6.
For example, here's how to convert 3000 milliampere-hours to coulombs using the formula above.
How Many Coulombs Are in a Milliampere-hour?
There are 3.6 coulombs in a milliampere-hour, which is why we use this value in the formula above.
Our milliampere-hour to coulomb calculator automatically converts your electric charge measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Milliampere-hours and coulombs are both units used to measure electric charge. Keep reading to learn more about each unit.
What Is a Milliampere-hour?
A milliampere-hour is a unit of electric charge equal to 3.6 coulombs (C), the base unit for electric charge. Battery capacity unit equal to 0.001 Ah or 3.6 Coulombs. [1]
The milliampere-hour is classified as a standard unit of electric charge. Milliampere-hours can be abbreviated as mAh; for example, 1 milliampere-hour can be written as 1 mAh.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the milliampere-hour (mAh) a convenient decimal multiple of the coulomb (C).
In practice, milliampere-hours (mAh) are widely used across standard electric charge applications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Coulomb?
SI unit of electric charge (1 A·s). It serves as a primary reference unit for measuring electric charge across scientific and practical applications. [2]
The coulomb is classified as an International System of Units (SI) unit of electric charge. Coulombs can be abbreviated as C; for example, 1 coulomb can be written as 1 C.
As the primary coherent reference unit for electric charge in this category, all other electric charge units are mathematically anchored to the coulomb (C).
In practice, coulombs (C) are widely used across standard electric charge applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting electric charge between milliampere-hours (mAh) and coulombs (C), keep full floating-point precision (1 mAh = 3.6 C; 1 C = 0.2777778 mAh) during intermediate calculations and round only the final coulomb figure to match your instrument tolerance.
More Milliampere-hour & Coulomb Conversions
Need to calculate in the opposite direction? Use our coulombs to milliampere-hours calculator to switch your starting unit immediately. You can also explore related tools such as converting coulombs to milliampere-hours, converting microcoulombs to coulombs, or converting nanocoulombs to coulombs.
Convert from Milliampere-hours
Frequently Asked Questions
References
- [1]NIST CUU StandardNIST CUU (Derived SI Unit: Coulomb (C))·Electric Charge Metrology Standard — Milliampere-hours (mAh) to Coulombs (C)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Electric Current)·Unit Specifications: Milliampere-hour (mAh) & Coulomb (C)
- [3]NIST SP 811 ReferenceNIST SP 811 (NIST SP 811 App. B.9 (1 Ah = 3,600 C))·Conversion Factors & Mathematical Basis (mAh to C)