GUANGZHOU NPP POWER CO., LTD
Huashan Town
Guangzhou
Guangdong Province
P. R. China

Tel: +86 20-37887390

Email: info@npplithium.com

# Watt Hours to Amp Hours Conversion Calculator (Wh to Ah)

Enter the watt-hour energy value and battery voltage to convert watt hours to amp hours.

The load watt hours energy of the battery is measured in Wh, and the amp-hour capacity of the battery is measured in Ah, indicating the output that the current can be maintained for a period of time. Learn more: The Difference in Watt hours and Amp hours

Amp hours(Ah) = Watt hours (Wh) / Voltage (V)

For example, if you have a 1200Wh Lithium battery with 12V, you’d divide watt hours by volts. 1200Wh / 12V = 100Ah, easily get Watt Hours to Amp Hours.

You can also convert Ah to Wh using a similar formula:

Watt hours (Wh) = Amp hours(Ah) * Voltage (V)

## Convert Kilowatt Hours to Amp Hours(kWh to Ah)

1 kWh is equal to 1000Wh. You can also use a similar formula to kWh to Ah, as follows:

Capacity(Ah) = Energy(kWh) * 1000 / Voltage(V)

For example: if you want to build a 10kWh 48V solar energy storage system, then how much capacity Ah battery is needed? According to the calculation, Capacity(AH) = 10kWh * 1000/48V, the resulting capacity is about 208.33Ah, which can be verified by using the Kilowatt Hours to Amp Hours calculator. At this point, you can consider choosing a 200Ah or 210Ah battery.

## Convert Watt Hours to Milliamp Hours (Wh to mAh)

1Ah is equal to 1000mAh, the calculation formula is:

Capacity(mAh) = Energy(Wh) / Voltage(V) * 1000

For example: you know that your mobile phone specifications are suitable for 3.82V, 10.28Wh battery, want to calculate the mobile phone battery Capacity, after using the Wh to mAh calculator, Capacity(mAh) = 10.28Wh / 3.82V * 1000, by calculation it is about 2691mAh.

## Watt Hours to Amp Hours Conversion Charts (at common DC voltages)

### Watt Hours to Amp Hours at 48V

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