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    Energy Conversion

    Watt-Hour to Electron Volt Converter

    Quick answer

    To convert Watt-Hours to Electron Volts, multiply by 2.246943e+22 (or divide by 4.450491e-23). Therefore, 1 Watt-Hour (Wh) equals 2.246943e+22 Electron Volts (eV).

    Formula: eV = Wh × 2.246943e+22. Worked example: 10 Wh = 2.246943e+23 eV.

    Convert Watt-Hour (Wh) to Electron Volt (eV) online with our free unit converter. In energy, 1 Wh = 2.246943e+22 eV. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.

    Worked example: converting Watt-Hour to Electron Volt

    1. Step 1 — start with the formula. eV = Wh × 2.246943e+22
    2. Step 2 — substitute your figure. 10 Wh × 2.246943e+22
    3. Step 3 — read the result. 10 Wh = 2.246943e+23 eV
    4. Step 4 — check it in reverse. Wh = eV × 4.450491e-23 returns 10 Wh, which matches the figure you started with.

    Energy Converter

    27 units available

    Decimals:
    2.246943e+22

    1 Wh = 2.246943e+22 eV

    Formula:

    eV = Wh × 2.246943e+22

    With your value: 1 Wh = 2.246943e+22 eV

    How big is that?

    Everyday references on a logarithmic scale, all expressed in watt-hour so you can sanity-check the result.

    Heartbeat (1/3.6e+3 your value)0.000278 Wh
    Your value1.00 Wh
    AA battery charge (2.8× your value)2.78 Wh
    Slice of bread (78× your value)77.8 Wh
    Daily food intake (2.3e+3× your value)2.33e+3 Wh
    Litre of petrol (9.5e+3× your value)9.50e+3 Wh

    Other Watt-Hour to Electron Volt conversions

    2 Wh to eV3 Wh to eV4 Wh to eV5 Wh to eV6 Wh to eV7 Wh to eV8 Wh to eV

    Watt-Hour to Electron Volt Conversion Table

    Watt-Hour (Wh)Electron Volt (eV)
    0.51.123472e+22
    12.246943e+22
    24.493887e+22
    51.123472e+23
    102.246943e+23
    153.370415e+23
    204.493887e+23
    255.617358e+23
    501.123472e+24
    1002.246943e+24
    2505.617358e+24
    5001.123472e+25
    10002.246943e+25

    Electron Volt to Watt-Hour Conversion Table

    Electron Volt (eV)Watt-Hour (Wh)
    0.52.225245e-23
    14.450491e-23
    28.900981e-23
    52.225245e-22
    104.450491e-22
    156.675736e-22
    208.900981e-22
    251.112623e-21
    502.225245e-21
    1004.450491e-21
    2501.112623e-20
    5002.225245e-20
    10004.450491e-20

    Where these values come from

    Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

    Watt-Hour (Wh)

    Energy

    Exact conversion

    Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

    Source: NIST Special Publication 811, Guide for the Use of the International System of Units

    National Institute of Standards and Technology (US) · Reviewed 2026-07-01

    Electron Volt (eV)

    Energy

    Exact conversion

    1 eV = 1.602 176 634 × 10⁻¹⁹ J exactly, since the elementary charge is now fixed.

    Source: CODATA Internationally Recommended Values of the Fundamental Physical Constants (2022 adjustment)

    CODATA / NIST · Reviewed 2026-07-01

    How to Convert Watt-Hour to Electron Volt

    To convert from Watt-Hour (Wh) to Electron Volt (eV), multiply the value by 2.246943e+22.

    Formula: eV = Wh × 2.246943e+22

    Reverse: Wh = eV × 4.450491e-23

    Step-by-Step Example

    1. Start with your value in Watt-Hour. For example: 5 Wh
    2. Multiply by the conversion factor: 5 x 2.246943e+22
    3. The result is: 1.123472e+23 eV

    Watt-Hour and Electron Volt Relationship

    This calculation facilitates standardized conversion between recognized units of energy. Since 1 Watt-Hour equals approximately 2.247e+22 Electron Volts, the Watt-Hour represents a larger unit interval than the Electron Volt. Understanding the relationship between Watt-Hour and Electron Volt is essential for accurate calculations in physics, engineering, commerce, and daily applications.

    About Watt-Hour

    The Watt-Hour (symbol: Wh) is a recognized unit in the Metric (SI) measurement framework, utilized within energy applications for precision and standardized data representation.

    Common uses of Watt-Hour: energy calculations, engineering and science, education.

    About Electron Volt

    The Electron Volt (symbol: eV) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.

    Common uses of Electron Volt: energy calculations, engineering and science, education.

    Frequently Asked Questions

    How many Electron Volts are in 1 Watt-Hour?
    There are exactly 2.246943e+22 Electron Volts in 1 Watt-Hour. This means the conversion factor from Watt-Hour to Electron Volt is 2.246943e+22.
    What is the formula to convert Watt-Hour to Electron Volt?
    The formula to convert Watt-Hour to Electron Volt is: eV = Wh × 2.246943e+22. For example, to convert 10 Watt-Hours to Electron Volts, you would multiply 10 by 2.246943e+22.
    What is a Watt-Hour?
    The Watt-Hour (symbol: Wh) is a recognized unit in the Metric (SI) measurement framework, utilized within energy applications for precision and standardized data representation.
    What is a Electron Volt?
    The Electron Volt (symbol: eV) is a recognized unit in the Standard measurement framework, utilized within energy applications for precision and standardized data representation.
    What are the common uses of Watt-Hour?
    The Watt-Hour is commonly used in energy calculations, engineering and science, education.

    Related Energy Conversions

    Joule → Electron VoltKilojoule → Electron VoltMegajoule → Electron VoltGigajoule → Electron VoltMillijoule → Electron VoltCalorie (th) → Electron VoltCalorie (IT) → Electron VoltKilocalorie → Electron VoltBTU (th) → Electron Volt

    Cite this page

    UnitConvertLab. (2026). Watt-Hour to Electron Volt converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/watt_hour-to-electron_volt