Milliampere-hours to Watt-hours Converter
Enter the electric charge in milliampere-hours below to convert it to watt-hours.
Convert Milliampere-hours to Watt-hours
Enter a value in milliampere-hours (mAh) to convert to watt-hours (Wh).
Milliampere-hour to Watt-hour Conversion Table
Table showing various milliampere-hour measurements converted to watt-hours. Click any preset value or arrow to load it into the converter.
How to Convert Milliampere-hours to Watt-hours
To convert milliampere-hours to watt-hours, multiply the electric charge by the following conversion ratio: 0.012 watt-hours/milliampere-hour.
Since one milliampere-hour is equal to 0.012 watt-hours, you can use this simple formula to convert:
The electric charge in watt-hours is equal to the electric charge in milliampere-hours multiplied by 0.012.
For example, here's how to convert 10000 milliampere-hours to watt-hours using the formula above.
How Many Watt-hours Are in a Milliampere-hour?
There are 0.012 watt-hours in a milliampere-hour, which is why we use this value in the formula above.
Our milliampere-hour to watt-hour calculator automatically converts your electric charge measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Milliampere-hours and watt-hours 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 Watt-hour?
A watt-hour is a unit of energy equal to 3,600 joules (J), the base unit for energy. Equal to 3,600 Joules. [2]
The watt-hour is classified as a metric and SI-compatible unit of energy. Watt-hours can be abbreviated as Wh; for example, 1 watt-hour can be written as 1 Wh.
When working with watt-hours (Wh) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, watt-hours (Wh) are widely used across large-scale industrial, bulk, and macro-level energy specifications within SI metric workflows, engineering documentation, and technical data sheets.
When converting electric charge between milliampere-hours (mAh) and watt-hours (Wh), keep full floating-point precision (1 mAh = 0.012 Wh; 1 Wh = 83.3333333 mAh) during intermediate calculations and round only the final watt-hour figure to match your instrument tolerance.
More Milliampere-hour & Watt-hour Conversions
Need to calculate in the opposite direction? Use our watt-hours to milliampere-hours calculator to switch your starting unit immediately. You can also explore related tools such as converting ampere-hours to watt-hours, converting milliampere-hours to ampere-hours, or converting milliampere-hours 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 Watt-hours (Wh)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Electric Current)·Unit Specifications: Milliampere-hour (mAh) & Watt-hour (Wh)
- [3]NIST SP 811 ReferenceNIST SP 811 (NIST SP 811 App. B.9 (1 Ah = 3,600 C))·Conversion Factors & Mathematical Basis (mAh to Wh)