Earth Bondhon
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Rojony Khatun Author
Rojony Khatun
CalculatorToolsProjectExpert
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Małgorzata Koperska, MD Steven Wooding
Last updated: September 3, 2025

Battery Capacity Converter: mAh, Ah, Wh, and kWh Online

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mAh
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Battery Capacity Converter calculator

Quickly convert battery capacity between mAh, Ah, Wh, and kWh. Accurate, free, and online tool for engineers, students, and electronics hobbyists.

battery capacity converter:

Battery capacity converters allow quick conversion between mAh, Ah, Wh, and kWh, helping users accurately determine energy storage, battery runtime, and device requirements.

⚡ Formula & Table Summary:

Battery capacity represents the amount of charge a battery can store. It can be expressed in milliampere-hours (mAh), ampere-hours (Ah), watt-hours (Wh), or kilowatt-hours (kWh). Use the formulas below to convert between units:

  • mAh → Ah: Ah = mAh ÷ 1000
  • Ah → mAh: mAh = Ah × 1000
  • Ah → Wh: Wh = Ah × Voltage (V)
  • Wh → Ah: Ah = Wh ÷ Voltage (V)
  • Wh → kWh: kWh = Wh ÷ 1000
  • kWh → Wh: Wh = kWh × 1000

This converter allows quick and accurate transformations between all common battery capacity units.

free battery unit converter

A battery capacity converter is an essential online tool for anyone working with batteries, from engineers and technicians to students and electronics enthusiasts. Batteries are rated in different units, such as milliampere-hours (mAh), ampere-hours (Ah), watt-hours (Wh), and kilowatt-hours (kWh), depending on the application or datasheet. Converting these units manually can be confusing and prone to errors, especially when designing circuits or comparing battery packs.
This battery capacity converter allows you to input a value in one unit and instantly see the equivalent capacity in other units. For example, 1 Ah equals 1,000 mAh, and the energy in Wh can be calculated using the voltage of the battery. The tool saves time, ensures accuracy, and helps in selecting appropriate batteries for devices, projects, or energy storage systems. With a user-friendly interface, it simplifies calculations, making it ideal for both beginners and professionals. Whether you are designing electronics, replacing batteries, or performing educational experiments, this converter provides reliable and fast results.

📊 Sample Data Table

mAhAhWh (12V)kWh (12V)
10001120.012
50005600.06
20000202400.24

Frequently Asked Questions - Battery Capacity Converter calculator:

What is a battery capacity converter?

It is an online tool to convert battery capacities between mAh, Ah, Wh, and kWh.

How do I convert mAh to Ah?

Divide the value in mAh by 1000 to get Ah.

How do I convert Ah to Wh?

Multiply Ah by the battery voltage (V) to get Wh.

How do I convert Wh to kWh?

Divide Wh by 1000 to get kWh.

Why are batteries rated in different units?

Different units represent capacity and energy depending on device requirements and size.

Can this tool help in electronics projects?

Yes, it helps select the correct battery capacity for your circuit.

Is the battery converter free?

Yes, this online battery converter is completely free to use.

Can students use it for learning?

Yes, it simplifies understanding of battery capacity and energy calculations.

Does voltage affect the conversion to Wh?

Yes, Wh = Ah × Voltage, so voltage must be known for accurate conversion.

Who can benefit from a battery converter?

Engineers, technicians, students, hobbyists, and anyone using batteries.

Rojony Khatun

Rojony Khatun

CalculatorToolsProject

Rojony Khatun is the creator of a free online tools website designed to simplify everyday and engineering-related calculations for students, professionals, and hobbyists. The platform offers a wide variety of basic and advanced calculators across key categories, including Electrical Calculators, Electronic Calculators, and Time & Date Calculators, helping users solve problems quickly and accurately.