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Energy,
in proportion.
Compare stored, transferred and released energy across particles, food, machines and large physical events.
Energy is an amount measured in joules. It is distinct from power, which measures how quickly energy is transferred.
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- Energy
- Common measurements
- Energy, Defined nominal stored energy, Released energy per reaction, Defined train kinetic energy, Defined launch kinetic energy, Photon energy at 550 nm
Within this category's most common primary scale, explore Visible photon at 2.247 eV and Supernova light model at 1 × 10²⁷ PJ. These are navigation anchors, not universal category limits.
25 entities in this category, ordered by name.
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25 measured entities
Browse energy
A 10 kWh day36 MJThis is the amount of electrical energy consumed by a household over the course of one day.
A 2,000 kcal food day8.368 MJDaily food energy is the chemical energy a person obtains from all food and drink consumed over a day.
An industrial terajoule1 TJAn industrial terajoule is a large unit of energy used to quantify industrial-scale processes or outputs.
Coin cell stored energy2.43 kJCoin cell stored energy is the total electrical energy that can be delivered by a small, disc-shaped lithium battery before depletion.
Deuterium–tritium fusion reaction energy2.82 × 10⁻¹² JDeuterium–tritium fusion reaction energy is the amount of energy released when a deuterium nucleus fuses with a tritium nucleus, producing a neutron and an alpha particle.
Electric car battery216 MJAn electric car battery stores energy to power an electric vehicle.
Food kilocalorie4.184 kJA food kilocalorie is the energy needed to raise the temperature of one kilogram of water by one degree Celsius, used to express food energy.Freight train at cruising speed1.23 GJThe kinetic energy of a freight train at cruising speed is the energy it has because of its motion along the tracks.Golf drive ball kinetic energy130 JGolf drive ball kinetic energy is the amount of energy a golf ball possesses due to its motion immediately after being struck.Green photon energy2.253 eVGreen photon energy is the energy carried by a single photon of green light, determined by its wavelength and fundamental physical constants.
Heat one litre of water334.4 kJHeating one litre of water is the energy required to raise the temperature of a standard amount of water to near boiling.
Hydrogen atom ground-state binding energy13.61 eVHydrogen atom ground-state binding energy is the energy needed to remove the electron from a hydrogen atom in its lowest energy state.
Laptop battery216 kJA laptop battery supplies electrical energy to a portable computer.Large Hadron Collider proton energy1.1 × 10⁻⁶ JLarge Hadron Collider proton energy is the kinetic energy carried by a single proton accelerated in the LHC.Lift an apple one metre1.765 JLifting an apple one metre is the work needed to raise a small object against Earth's gravity over that distance.
Lightning energy model1 GJA lightning energy model represents the total energy released during a single lightning discharge.Moon orbital kinetic energy3.83 × 10¹³ PJMoon orbital kinetic energy is the energy the Moon possesses due to its motion as it orbits Earth.
One litre of petrol34 MJOne litre of petrol is a standard quantity of liquid fuel used in combustion engines.
One second of sunlight3.828 × 10¹¹ PJThe total energy emitted by the Sun in all directions over one second.
One tonne TNT equivalent4.184 GJOne tonne of TNT equivalent is a conventional unit of energy, defined as 4.184 gigajoules rather than by the variable yield of a particular explosive sample.One-gigaelectronvolt cosmic-ray proton1.602 × 10⁻¹⁰ JA one-gigaelectronvolt cosmic-ray proton is a hydrogen nucleus travelling through space with a kinetic energy of 1 GeV.
Phone battery54 kJA phone battery stores electrical energy to power a mobile phone.Supernova light model1 × 10²⁷ PJThe electromagnetic energy released by a typical supernova explosion, excluding kinetic and neutrino energy.Tennis ball serve kinetic energy120 JTennis ball serve kinetic energy is the amount of energy a tennis ball has due to its motion immediately after being struck during a serve.Visible photon2.247 eVA visible photon is a single particle of light within the range detectable by the human eye.