Watt hours to Amp hours Calculator

Watt Hours to Amp Hours Calculator easily converts energy (Wh) to charge (Ah) capacity for batteries and electrical systems. Simply enter your watt hours and voltage to instantly get equivalent amp hours, helping you compare battery specifications or design power systems with accurate calculations.

Watt Hours to Amp Hours Calculator is an essential tool for anyone working with batteries, solar power systems, or electrical devices, providing quick and accurate conversions between energy (Wh) and charge capacity (Ah).

Watt Hours to Amp Hours Calculator

Watt Hours (Wh):

Please enter a valid watt hour value

Volts (V):

Please enter a valid voltage value

Result

Amp Hours (Ah): 0 Ah

Formula: Amp Hours (Ah) = Watt Hours (Wh) ÷ Volts (V)

Example: For a 500Wh battery at 12V, the calculation would be 500Wh ÷ 12V = 41.67Ah

This conversion is critical for selecting compatible batteries, designing off-grid power setups, or optimizing device runtime. By simplifying formula (Wh ÷ V = Ah), calculator eliminates manual errors and ensures precise comparisons between battery specifications.

Whether you’re an engineer, DIY enthusiast, or renewable energy professional, this tool helps make informed decisions about power storage and consumption, improving efficiency and cost-effectiveness in electrical projects.

What’s Difference Between Amp Hours and Watt Hours?

Think of it like water: Amp hours (Ah) measure the “flow” of electricity how much current battery can supply over time. It’s like counting how many gallons pass through pipe. Watt hours (Wh), on other hand, measure total “energy” actual power battery can deliver, like how far those gallons can push waterwheel.

The key: Voltage connects them. A 12V, 100Ah battery (1,200Wh) holds more energy than 3.7V, 100Ah battery (370Wh) even though both “flow” same current. Watt hours tell you how long device will run, amp hours help compare battery sizes at the same voltage.

What is Watt hours (Wh)?

Watt hours (Wh) measure energy capacity. how much total power battery can deliver over time (1 Wh = 1 watt running for 1 hour). It tells you how long a device will run.

What is Amp hours (Ah)?

Amp hours (Ah) measure charge capacity how much electric current a battery can provide over time (1 Ah = 1 amp flowing for 1 hour). It helps compare battery sizes.

The key difference: Wh indicates total energy (like gallons in fuel tank), while Ah shows charge flow (like pipe size). Our calculator bridges these units using voltage (V) to convert between them.