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    Energy Conversion

    1 Electron Volt to Joule

    Quick answer

    1 Electron Volt (eV) equals

    1.602177e-19 J

    To convert 1 Electron Volts to Joules, multiply by 1.602177e-19. Therefore, 1 Electron Volt (eV) equals 1.602177e-19 Joule (J).

    Formula: J = eV × 1.602177e-19. Calculation: 1 × 1.602177e-19 = 1.602177e-19 J.

    Convert Electron Volt (eV) to Joule (J) online with our free unit converter. In energy, 1 eV = 1.602177e-19 J. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.

    Worked example: converting Electron Volt to Joule

    1. Step 1 — start with the formula. J = eV × 1.602177e-19
    2. Step 2 — substitute your figure. 1 eV × 1.602177e-19
    3. Step 3 — read the result. 1 eV = 1.602177e-19 J
    4. Step 4 — check it in reverse. eV = J × 6.241509e+18 returns 1 eV, which matches the figure you started with.

    Energy Converter

    27 units available

    Decimals:
    1.602177e-19

    1 eV = 1.602177e-19 J

    Formula:

    J = eV × 1.602177e-19

    With your value: 1 eV = 1.602177e-19 J

    How big is that?

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

    Your value1.00 eV
    Heartbeat (6.2e+18× your value)6.24e+18 eV
    AA battery charge (6.2e+22× your value)6.24e+22 eV
    Slice of bread (1.7e+24× your value)1.75e+24 eV
    Daily food intake (5.2e+25× your value)5.24e+25 eV
    Litre of petrol (2.1e+26× your value)2.13e+26 eV

    Other Electron Volt to Joule conversions

    2 eV to J3 eV to J4 eV to J5 eV to J6 eV to J7 eV to J8 eV to JFull Electron Volt to Joule converter

    Electron Volt to Joule Conversion Table

    Electron Volt (eV)Joule (J)
    0.58.010883e-20
    11.602177e-19
    23.204353e-19
    58.010883e-19
    101.602177e-18
    152.403265e-18
    203.204353e-18
    254.005442e-18
    508.010883e-18
    1001.602177e-17
    2504.005442e-17
    5008.010883e-17
    10001.602177e-16

    Joule to Electron Volt Conversion Table

    Joule (J)Electron Volt (eV)
    0.53.120755e+18
    16.241509e+18
    21.248302e+19
    53.120755e+19
    106.241509e+19
    159.362264e+19
    201.248302e+20
    251.560377e+20
    503.120755e+20
    1006.241509e+20
    2501.560377e+21
    5003.120755e+21
    10006.241509e+21

    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.

    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

    Joule (J)

    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

    How to Convert Electron Volt to Joule

    To convert from Electron Volt (eV) to Joule (J), multiply the value by 1.602177e-19.

    Formula: J = eV × 1.602177e-19

    Reverse: eV = J × 6.241509e+18

    Step-by-Step Example

    1. Start with your value in Electron Volt. For example: 5 eV
    2. Multiply by the conversion factor: 5 x 1.602177e-19
    3. The result is: 8.010883e-19 J

    Electron Volt and Joule Relationship

    This calculation facilitates standardized conversion between recognized units of energy. Since 1 Electron Volt represents a fraction of a Joule (1 Joule ≈ 6.242e+18 Electron Volts), the Joule is the larger measurement interval. Understanding the relationship between Electron Volt and Joule is essential for accurate calculations in physics, engineering, commerce, and daily applications.

    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.

    About Joule

    The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.

    Common uses of Joule: physics, electrical engineering, chemistry.

    Frequently Asked Questions

    What is 1 Electron Volt in Joule?
    1 Electron Volt equals 1.602177e-19 Joule.
    How many Joules are in 1 Electron Volt?
    There are exactly 1.602177e-19 Joules in 1 Electron Volt. This means the conversion factor from Electron Volt to Joule is 1.602177e-19.
    What is the formula to convert Electron Volt to Joule?
    The formula to convert Electron Volt to Joule is: J = eV × 1.602177e-19. For example, to convert 10 Electron Volts to Joules, you would multiply 10 by 1.602177e-19.
    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 is a Joule?
    The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
    What are the common uses of Electron Volt?
    The Electron Volt is commonly used in energy calculations, engineering and science, education.

    Related Energy Conversions

    Kilojoule → JouleMegajoule → JouleGigajoule → JouleMillijoule → JouleCalorie (th) → JouleCalorie (IT) → JouleKilocalorie → JouleBTU (th) → JouleBTU (IT) → Joule

    Cite this page

    UnitConvertLab. (2026). 1 Electron Volt to Joule. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/1-electron_volt-to-joule