Electron Volts to Joules Converter for Canadian Students & Engineers
Free eV to joules converter built for Canadian university physics, photonics labs, and semiconductor work. Convert electron volts to joules instantly and get accurate, SI-ready results — no sign-up required.
Canadian Energy Converter & CalculatorThe quick answer for 1 Electron Volts — type any value below for the exact result
Electron Volts
Joules
eV to J Conversion Formula
To convert electron volts to joules, multiply the eV value by 1.60218e-19. One electron volt is the energy a single electron gains crossing a one-volt potential, and its joule equivalent sits at the atomic scale — 1 eV = 1.60218e-19 J. The same factor covers everything from a photon in a first-year lab to a 500 MeV proton at TRIUMF in Vancouver.
Electron Volts and Joules Explained
Electron Volts (ev)
The electron volt (eV) is the kinetic energy a single electron gains when accelerated through an electric potential of one volt, equal to 1.60218e-19 joules. It is the working unit of atomic physics because natural energies there are small numbers: chemical bonds run 1-10 eV, visible photons 1.6-3.3 eV, and diagnostic X-rays tens of keV. Its multiples scale smoothly up through the 500 MeV protons at TRIUMF in Vancouver to the TeV beam energies of the Large Hadron Collider.
Where it is used: Standard in atomic and particle physics, photon and spectroscopy tables, semiconductor band-gap data, X-ray and radiation dosimetry contexts, and accelerator engineering.
Origin: Introduced in the early 20th century as vacuum-tube experiments made electron energies directly measurable by applied voltage; the name stuck because voltage was the observable.
Joules (j)
The joule (J) is the SI unit of energy — one newton-metre, or one watt-second — and the unit every physical equation expects after dimensional analysis. A single joule is enormous on the atomic scale: it equals about 6.2415e18 eV, or the energy of more than three quintillion red photons. Physicists convert eV to J (factor 1.60218e-19) whenever microscopic quantities must enter macroscopic formulas involving mass, velocity, power, or temperature.
Where it is used: Mandatory in SI-based publication, engineering computation, and any calculation mixing atomic quantities with everyday units like watts or kilograms.
Origin: Named for James Prescott Joule, who established the equivalence of heat and mechanical work in the 1840s; the joule anchors the modern SI energy framework.
Electron Volts to Joules Conversion Table
| Electron Volts (ev) | Joules (j) |
|---|---|
| 1 ev | 1.602180e-19 j |
| 2 ev | 3.204360e-19 j |
| 5 ev | 8.010900e-19 j |
| 10 ev | 1.602180e-18 j |
| 25 ev | 4.005450e-18 j |
| 50 ev | 8.010900e-18 j |
| 100 ev | 1.602180e-17 j |
| 1000 ev | 1.602180e-16 j |
| 10000 ev | 1.602180e-15 j |
| 100000 ev | 1.602180e-14 j |
| 1.000000e+6 ev | 1.602180e-13 j |
| 1.000000e+9 ev | 1.602180e-10 j |
| 1.000000e+12 ev | 1.602180e-7 j |
Joules to Electron Volts Conversion Table
| Joules (j) | Electron Volts (ev) |
|---|---|
| 1.000000e-19 j | 0.6241495962 ev |
| 1.602180e-19 j | 1 ev |
| 1.000000e-18 j | 6.2414959618 ev |
| 1.000000e-17 j | 62.4149596175 ev |
| 1.000000e-15 j | 6241.4959617521 ev |
| 1.000000e-12 j | 6.241496e+6 ev |
| 1.000000e-9 j | 6.241496e+9 ev |
| 1.000000e-6 j | 6.241496e+12 ev |
| 0.001 j | 6.241496e+15 ev |
| 1 j | 6.241496e+18 ev |
Electron Volts to Joules in Everyday Objects
Common real-world examples that make Electron Volts and Joules easy to picture at a glance.
| Electron Volts (ev) | Joules (j) | |
|---|---|---|
| A thermal-energy electron in a 21°C room | 0.025 ev | 4.005450e-21 j |
| A red photon (650 nm) | 1.9 ev | 3.044142e-19 j |
| A blue photon (450 nm) | 2.75 ev | 4.405995e-19 j |
| Breaking a molecular bond | 4 ev | 6.408720e-19 j |
| A dental X-ray photon | 60000 ev | 9.613080e-15 j |
| A proton in the LHC | 6.500000e+12 ev | 1.041417e-6 j |
When You Need Electron Volts to Joules Conversions
Semiconductor Band-Gap Calculations
LED and solar-cell datasheets quote band gaps in eV — silicon at 1.12 eV, GaN at 3.4 eV. Converting to 1.79444e-19 J and 5.44741e-19 J lets engineers, from Waterloo startups to Ontario manufacturers, compute junction power densities in pure SI units.
Photon Energy in Spectroscopy
Spectra are labelled in eV while detector energy budgets are in joules. A 2.33 eV green laser line becomes 3.73e-19 J per photon — multiply by photon flux and optical power falls out in watts, a daily juggling act at facilities like the Canadian Light Source in Saskatoon.
Radiation and Dosimetry Coursework
Nuclear courses quote gamma energies in MeV but absorbed-dose formulas need joules per kilogram. A 0.662 MeV caesium-137 photon converts to 1.06064e-13 J before entering dose equations — the same math behind radiation-safety standards enforced by the CNSC and Canada's medical-isotope programs.
Particle Accelerator Problem Sets
Accelerator physics mixes beam energies with SI kinematics. An LHC proton at 6.5 TeV (6.5e12 eV) carries just 1.04142e-6 J — so little energy per particle that you would need roughly 1.7 billion of them to warm a Tim Hortons double-double by one degree Celsius.
Related Energy Conversions
How to Use
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1
Enter Electron Volts
Type the eV value from your physics or engineering problem — typical entries are single-digit eV for photons and chemical bonds, or scientific notation like 5e8 eV for a proton at TRIUMF in Vancouver
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2
View Joules
The SI equivalent appears instantly: a 2 eV visible photon converts to 3.20436e-19 J, ready for any equation requiring SI units
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3
Copy or Swap
Copy the result or click Swap to convert joules back to electron volts (1 J = 6.2415e18 eV) for reverse checks
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4
Keep the Scale in Mind
One joule equals about 6.2415e18 eV, so everyday energies hold astronomical electron-volt counts — charging a smartphone overnight on BC Hydro power takes roughly 54,000 J, some 3.37e23 eV. If your result is not vanishingly small, an exponent slipped
Why Use Be Converter?
Instant Conversion
Get precise eV to joule results in real time as you type — ideal for problem sets, lab reports, and study sessions from Vancouver to Halifax
Scientific Notation Handled Cleanly
Enter values like 2.5 eV or 6.5e12 eV and get exact results using 1 eV = 1.60218e-19 J — no manual exponent arithmetic the night before a lab report is due
Conversion Table
Quick reference across physics scales — 1.9 eV red photon (3.04e-19 J), 5,000 eV X-ray photon (8.01e-16 J), and 6.5e12 eV LHC proton (1.04e-6 J)
Bidirectional
Easily swap between electron volts and joules with one click to check both directions of a calculation
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Frequently Asked Questions
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About Electron Volts to Joules Converter
Our free online electron volts to joules converter gives Canadian students, researchers, and engineers instant, accurate energy conversions for physics, chemistry, and materials science. The electron volt is the natural energy unit of the microscopic world: photon energies, chemical bond strengths, semiconductor band gaps, X-ray emissions, and particle accelerator beams are all measured in eV or its multiples (keV, MeV, GeV, TeV) — at facilities like TRIUMF in Vancouver and the Canadian Light Source synchrotron centre in Saskatoon. The SI joule remains the required unit for formal equations, lab reports, and dimensional analysis. Using the conversion 1 eV = 1.60218e-19 J, this tool bridges the two systems instantly — enter any value in electron volts and receive the joule equivalent in clean scientific notation.
Expert Tips for eV to J Conversion
The factor is 1.60218e-19 J per eV. In reverse, 1 J = 6.2415e18 eV. Memorize the exponent pair (-19 / +18) and you can sanity-check any conversion by magnitude alone.
Prefix shortcuts: 1 keV = 1.60218e-16 J, 1 MeV = 1.60218e-13 J, 1 GeV = 1.60218e-10 J, 1 TeV = 1.60218e-7 J. A 500 MeV proton at TRIUMF in Vancouver carries 8.01e-11 J, while LHC protons at 6.5 TeV carry 1.04e-6 J each.
Photon work: E = hc/λ gives energy in eV when λ is in nanometers as 1240/λ. A 620 nm red photon is 2.0 eV; converting to joules (×1.60218e-19) yields 3.2e-19 J.
Semiconductor band gaps: silicon at 1.12 eV is 1.79444e-19 J and GaN at 3.4 eV is 5.44741e-19 J. Converting to joules matters when computing power densities from photon flux — whether you are spec'ing LED lighting for long Canadian winters or evaluating solar panels on the Prairies.
Chemistry crossover: bond energies often appear in kJ/mol. Since 1 eV per particle equals 96.48 kJ/mol, a 4 eV bond is about 385.9 kJ/mol — convert to joules per particle (6.40872e-19 J) first for consistency.