Wh to mAh Calculator
Quickly convert watt-hours (Wh) to milliamp-hours (mAh) with this calculator. Enter Wh, voltage (V), and get the battery capacity in mAh. Accurate and easy-to-use tool.
Quick Intro: Convert wh to mAh
If you're working with battery specs or designing a power supply, converting Wh to mAh is essential. This tool takes the guesswork out of the calculation by using the standard formula to determine how much electric charge a battery stores based on its energy and voltage.
Formula to Convert wh to mAh
- mAh = (Wh × 1000) ÷ V
Example: 3 Wh at 3.7V → (3 × 1000) ÷ 3.7 ≈ 810.81 mAh
Wh to mAh Calculator Overview
Use this simple calculator to convert Watt-hours (Wh) to milliamp-hours (mAh). Just input the energy (Wh) and voltage (V), and you'll get the battery capacity in mAh. Ideal for electronics, lithium batteries, and power banks.
Sample Wh to mAh Canversion Table
| Wh | Voltage (V) | mAh |
|---|---|---|
| 10 | 5 | 2000 |
| 7.4 | 3.7 | 2000 |
Frequently Asked Questions - Wh to mAh Calculator:
How do I convert Wh to mAh?
Use the formula: mAh = (Wh × 1000) ÷ Voltage (V).
What is mAh?
Milliamp-hours (mAh) measure electric charge or battery capacity.
What info do I need for this calculator?
You need watt-hours (Wh) and voltage (V).
Is this accurate for lithium-ion batteries?
Yes, it's commonly used for lithium-ion cells.
Can I convert mAh to Wh?
Yes, use Wh = (mAh × V) ÷ 1000.
Why multiply by 1000?
To convert amps to milliamps since 1 A = 1000 mA.
What voltage should I use for USB devices?
Use 5V unless your device specifies otherwise.
Is this calculator free?
Yes, it's free and accessible online.
Can this help size batteries?
Yes, it helps determine battery capacity needed.
What’s the unit of the result?
The result is in milliamp-hours (mAh).
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