Battery Capacity Conversion - Convert mAh, Ah, Wh, and More
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Understanding Battery Capacity Measurements
Battery capacity conversions are essential for electronics, electric vehicles, and energy storage. Different applications use various units (mAh, Ah, Wh, kWh), and understanding these conversions is crucial for device selection, power management, and comparing battery technologies.
Common Battery Capacity Units
Charge Units
- Milliampere-hour (mAh) - Small batteries
- Ampere-hour (Ah) - Larger batteries
- Coulomb (C) - SI base unit
- Faraday (F) - Electrochemistry
Energy Units
- Watt-hour (Wh) - Energy capacity
- Kilowatt-hour (kWh) - Large batteries, EVs
- Joule (J) - SI energy unit
Common Applications
| Field | Common Units | Typical Uses |
|---|---|---|
| Mobile Devices | mAh, Wh | Smartphones, tablets, laptops |
| Electric Vehicles | kWh, Ah | Battery packs, range calculation |
| Power Tools | Ah, Wh | Cordless tools, runtime |
| Energy Storage | kWh, MWh | Grid storage, backup systems |
Conversion Tips
- 1 ampere-hour equals 1000 milliampere-hours
- Watt-hours = Ampere-hours × Voltage
- 1 kilowatt-hour equals 1000 watt-hours
- Remember that actual capacity may vary with usage conditions
Battery Capacity Conversions
| Conversion | Formula | Quick Answer |
|---|---|---|
| mAh to Ah | mAh ÷ 1000 = Ah | Divide mAh by 1000 |
| Ah to mAh | Ah × 1000 = mAh | Multiply Ah by 1000 |
| Ah to Wh | Ah × Voltage = Wh | Multiply Ah by voltage |
| Wh to Ah | Wh ÷ Voltage = Ah | Divide Wh by voltage |
| Wh to kWh | Wh ÷ 1000 = kWh | Divide Wh by 1000 |
| kWh to Wh | kWh × 1000 = Wh | Multiply kWh by 1000 |
| Wh to J | Wh × 3600 = J | Multiply Wh by 3600 |
| J to Wh | J ÷ 3600 = Wh | Divide J by 3600 |
| Coulomb to Ah | C ÷ 3600 = Ah | Divide C by 3600 |
| Ah to Coulomb | Ah × 3600 = C | Multiply Ah by 3600 |
Our battery capacity conversion tool provides accurate conversions between all major battery units, making it easy to compare, design, and select batteries for any application. Always consider voltage and energy requirements for the best results.
Battery Capacity Conversion Questions
Everything you need to know about battery capacity measurements and conversions
Have more questions? Our conversion tools are designed to be accurate and user-friendly.