Ah to Wh Calculator

Convert amp-hours (Ah) to watt-hours (Wh). Multiply Ah by voltage to find the energy capacity of batteries.

ByPRIYA SHARMAโ€ขUpdated April 20, 2026
|
Reviewed byDR. RAJIV NAIR
|
Fact checked byNEHA KAPOOR
Ah
V

ENERGY

1,200 Wh

IN kWh

1.2 kWh

FORMULA

Wh = Ah ร— V

๐Ÿ’ก How to Convert Ah to Wh

Formula

Wh = Ah ร— V

Example: 100 Ah at 12V = 1,200 Wh (1.2 kWh)

Watt-hours give you the actual energy stored in a battery, making it easier to compare batteries of different voltages.

๐Ÿ”— Related Calculators

Wh to Ah CalculatorConvert watt-hours (Wh) to amp-hours (Ah) for battery capacity. Divide Wh by voltage to determine the Ah rating needed.Ah to kWh CalculatorConvert amp-hours (Ah) to kilowatt-hours (kWh) for battery capacity calculations. Essential for solar, RV, and EV battery system design.mAh to Wh CalculatorConvert milliamp-hours (mAh) to watt-hours (Wh) to compare battery energy across devices. Essential for understanding smartphone and laptop battery life.Wh to mAh CalculatorConvert watt-hours (Wh) to milliamp-hours (mAh) for smartphone, laptop, and portable device battery comparisons. Uses nominal voltage.