Watt-hours to Ampere-hours Converter
Enter the energy in watt-hours below to convert it to ampere-hours.
Convert Watt-hours to Ampere-hours
Enter a value in watt-hours (Wh) to convert to ampere-hours (Ah).
Watt-hour to Ampere-hour Conversion Table
Table showing various watt-hour measurements converted to ampere-hours. Click any preset value or arrow to load it into the converter.
| Watt-hours (Wh) | Ampere-hours (Ah) |
|---|---|
| 1 Wh | 0.0833333 Ah |
| 2 Wh | 0.1666667 Ah |
| 5 Wh | 0.4166667 Ah |
| 10 Wh | 0.8333333 Ah |
| 15 Wh | 1.25 Ah |
| 20 Wh | 1.6666667 Ah |
| 25 Wh | 2.0833333 Ah |
| 30 Wh | 2.5 Ah |
| 50 Wh | 4.1666667 Ah |
| 75 Wh | 6.25 Ah |
How to Convert Watt-hours to Ampere-hours
To convert watt-hours to ampere-hours, multiply the energy by the following conversion ratio: 0.0833333 ampere-hours/watt-hour.
Since one watt-hour is equal to 0.0833333 ampere-hours, you can use this simple formula to convert:
The energy in ampere-hours is equal to the energy in watt-hours multiplied by 0.0833333.
For example, here's how to convert 1200 watt-hours to ampere-hours using the formula above.
How Many Ampere-hours Are in a Watt-hour?
There are 0.0833333 ampere-hours in a watt-hour, which is why we use this value in the formula above.
Our watt-hour to ampere-hour calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Watt-hours and ampere-hours are both units used to measure energy. Keep reading to learn more about each unit.
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. [1]
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.
What Is an Ampere-hour?
An ampere-hour is a unit of electric charge equal to 3,600 coulombs (C), the base unit for electric charge. Battery charge capacity unit equal to 3,600 Coulombs (1,000 mAh). [2]
The ampere-hour is classified as a standard unit of electric charge. Ampere-hours can be abbreviated as Ah; for example, 1 ampere-hour can be written as 1 Ah.
When working with ampere-hours (Ah) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, ampere-hours (Ah) are widely used across large-scale industrial, bulk, and macro-level electric charge specifications within international standard workflows, engineering documentation, and technical data sheets.
When converting energy between watt-hours (Wh) and ampere-hours (Ah), keep full floating-point precision (1 Wh = 0.0833333 Ah; 1 Ah = 12 Wh) during intermediate calculations and round only the final ampere-hour figure to match your instrument tolerance.
More Watt-hour & Ampere-hour Conversions
Need to calculate in the opposite direction? Use our ampere-hours to watt-hours converter (Ah to Wh) to switch your starting unit immediately. You can also explore related tools such as converting milliampere-hours to ampere-hours, converting kilowatt-hours to ampere-hours, or converting joules to calories.
Convert from Watt-hours
Frequently Asked Questions
References
- [1]NIST CODATA StandardNIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Watt-hours (Wh) to Ampere-hours (Ah)
- [2]NIST SP 811 SpecificationNIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Watt-hour (Wh) & Ampere-hour (Ah)
- [3]BIPM ReferenceBIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (Wh to Ah)