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Electric Unit Converter (Charge & Voltage)

Convert electric units like Coulomb, Faraday, mA·h, statC, statV, Volt, abvolt, and more—instantly and accurately online.

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    ⚡ Overview: Convert Electric Units Easily

    The Electric Unit Converter lets you instantly convert between units of electric charge (Coulombs, Faradays, statC, mA·h, etc.) and voltage (Volts, statV, abV). Whether you work in electronics, physics, battery design, or educational labs, this tool ensures fast, accurate, and flexible conversions between the SI and CGS systems.

    • Electric charge (Q): Measures the quantity of electricity. 1 Coulomb equals the charge of approximately 6.242 × 10¹⁸ electrons. • Electric potential (V): The voltage or potential difference between two points, where 1 Volt means 1 Joule of energy per Coulomb of charge.

    🧪 Formula & Conversion Methodology

    Conversions are pivoted through SI base units—Coulomb for charge and Volt for voltage:

    Electric Charge:

    QC = Qinput × factor_from  
Qoutput = QC ÷ factor_to

    Voltage:

    VSI = Vinput × factor_from  
Voutput = VSI ÷ factor_to

    Standard conversion factors (to SI):

    UnitSymbolFactor → SISystem
    CoulombC1SI (Ampere × second)
    abcoulombabC10CGS (emu)
    statcoulombstatC3.33564 × 10⁻¹⁰CGS (esu)
    FaradayF96485.3383Chemistry (1 mole of e⁻)
    Milliampere-hourmA·h3.6Battery capacity unit
    VoltV1SI base unit
    abvoltabV1×10⁻⁸CGS (emu)
    statvoltstatV299.792458CGS (esu)

    📊 Example Calculations

    • 2 abC → Coulombs: 2 × 10 = 20 C
    • 100 mA·h → Coulombs: 100 × 3.6 = 360 C
    • 5 statV → Volts: 5 × 299.792458 = 1498.96 V
    • 1 Faraday → Coulombs: 96485.3383 C

    🔌 Real-World Use Cases

    • Battery designers: Convert milliamp-hours to Coulombs for battery testing or modeling.
    • Electrical engineers: Switch between statV and SI volts in field simulations.
    • Physicists & researchers: Convert CGS units from older publications to SI format.
    • Electrochemistry: Use Faraday values in electrode reactions and stoichiometric modeling.
    • Students & educators: Explore historical and scientific context across unit systems.

    ❓ Frequently Asked Questions

    Why is 1 abC equal to 10 Coulombs?

    In the CGS electromagnetic (emu) system, 1 abcoulomb is defined to maintain consistent force equations. It's equivalent to 10 Coulombs in the SI system.

    What is a statvolt, and why is it so large?

    The statvolt is part of the CGS electrostatic system (esu). Due to the unit definitions, 1 statvolt ≈ 299.792458 volts, aligning with the speed of light in conversion factors.

    How accurate are the conversion factors?

    All constants are based on IUPAC and NIST standards. Some legacy systems may differ slightly due to rounding or older definitions.

    What’s the difference between CGS emu and CGS esu?

    CGS emu is the electromagnetic system (e.g., abC, abV), while CGS esu is the electrostatic system (e.g., statC, statV). They're separate systems with different base assumptions.

    Can I convert between charge and voltage?

    Not directly. Charge (C) and voltage (V) measure different properties. However, in circuits, you can relate them through energy or capacitance: 

    Q = C × V
    where Q is charge, C is capacitance, and V is voltage.

    Why is mA·h used for batteries instead of Coulombs?

    Battery manufacturers prefer mA·h because it better represents capacity over time (1 hour). Engineers convert it to Coulombs (1 mA·h = 3.6 C) when modeling energy flow.

    Where are these unit definitions from?

    The unit standards and conversions follow official references from SI, CGS, IUPAC, and NIST documentation.