Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 kWh | 2.247e+22 eV | |
| 0.01 kWh | 2.247e+23 eV | |
| 0.1 kWh | 2.247e+24 eV | |
| 1 kWh | 2.247e+25 eV | |
| 5 kWh | 1.124e+26 eV | |
| 10 kWh | 2.247e+26 eV | |
| 50 kWh | 1.124e+27 eV | |
| 100 kWh | 2.247e+27 eV | |
| 1000 kWh | 2.247e+28 eV |
Formula: Electron Volt = Kilowatt-Hour × 2.2472e25
Multiply any kilowatt-hour value by 2.2472e25 to get electron volt.
Reverse: Kilowatt-Hour = Electron Volt × 4.4500e-26
Common kilowatt-hour values — factor: 1 kWh = 2.2472e25 eV
| Kilowatt-Hour (kWh) | Electron Volt (eV) | Context |
|---|---|---|
| 0.001 kWh | 2.247e+22 eV | 1 Wh |
| 0.01 kWh | 2.247e+23 eV | 10 Wh |
| 0.1 kWh | 2.247e+24 eV | Phone charge |
| 0.5 kWh | 1.124e+25 eV | Half kWh |
| 1 kWh | 2.247e+25 eV | 1 kWh |
| 5 kWh | 1.124e+26 eV | 5 kWh |
| 10 kWh | 2.247e+26 eV | Washing machine |
| 30 kWh | 6.742e+26 eV | Daily home use |
| 100 kWh | 2.247e+27 eV | Monthly fraction |
| 500 kWh | 1.124e+28 eV | EV range |
| 1,000 kWh | 2.247e+28 eV | Monthly home |
| 1e+04 kWh | 2.247e+29 eV | Annual home |
| 1e+05 kWh | 2.247e+30 eV | Large commercial |
| 1e+06 kWh | 2.247e+31 eV | Small factory |
| 1.000e+09 kWh | 2.247e+34 eV | Power plant day |
1 kWh = 2.2472e25 eV. Memorize for instant estimates.
Use 2.2472e25 as a quick mental multiplier.
Multiply result by 4.4500e-26 to recover the original kWh value.
Reads monthly bills and compares appliance energy use in kWh.
Sizes solar systems based on kWh consumption and production estimates.
Tracks charging cost and range efficiency in kWh per 100 km.
Measures building energy consumption and identifies savings in kWh.
Plans grid capacity, demand response, and billing in kWh and MWh.
Monitors real-time appliance consumption in kWh via smart meters.
The kilowatt-hour (kWh) is the commercial unit of electrical energy, equal to the energy consumed by a 1,000-watt appliance in one hour (3,600,000 joules). It became standard with the growth of the electrical grid in the late 19th century.
Electricity bills worldwide are denominated in kWh. A typical household uses 300–1,000 kWh per month. An electric car uses about 15–25 kWh per 100 km. Solar panels generate 250–400 kWh per year per panel.
Interesting fact: The average price of electricity in the US is about $0.12 per kWh. One kWh can run a 100W light bulb for 10 hours, charge a smartphone about 100 times, or power a laptop for 2-3 days.
The electron volt (eV) is the energy gained by a single electron accelerating through a potential difference of one volt, equal to approximately 1.602 × 10⁻¹⁹ joules. It was formally adopted as a unit by the IEC in 1930.
Electron volts are the standard energy unit in atomic physics, particle physics, and semiconductor engineering. Chemical bond energies are a few eV; X-ray photons are kiloelectron volts (keV); particle accelerators measure GeV and TeV.
Interesting fact: The Large Hadron Collider accelerates protons to 6.8 TeV (6.8 × 10¹² eV). Visible light photons have energies of 1.8–3.1 eV. The rest mass energy of an electron is 511 keV.
Converting kilowatt-hour to electron volt is common across energy, nutrition, engineering, and science. Different sectors use different energy units — joules in physics, kcal in nutrition, kWh in electricity, and BTU in HVAC — making accurate conversion essential for cross-disciplinary work and international comparisons.
Quick reference: 5 kWh = 1.1236e26 eV and 10 kWh = 2.2472e26 eV. Reverse: 1 eV = 4.4500e-26 kWh. Exact factor: 1 kWh = 2.2472e25 eV.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.