Heat one litre of water
Heating one litre of water is the energy required to raise the temperature of a standard amount of water to near boiling.
How big is it?
334.4 kJ of energy
Energy · defined energy model
A little perspective
About 1.55 times the energy of Laptop battery.
Laptop battery: A laptop battery supplies electrical energy to a portable computer.
Measurements, assumptions & sources +
Heat one litre of water
An ideal model: 1 kg water heated by 80 K at 4,180 J/(kg·K). Excludes heat losses and phase change.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
Laptop battery
A defined 60 Wh battery. This is stored energy, not device power.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 334.4 kJ
For comparison, this page uses energy. This is labelled defined energy model: an explicit comparison model rather than a claim that every example has the same value.
An ideal model: 1 kg water heated by 80 K at 4,180 J/(kg·K). Excludes heat losses and phase change.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Heat one litre of water dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 334.4 kJ | Not recorded | defined energy model |
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Curated comparisons
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Follow your curiosity.
EnergyFood 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.
EnergyPhone battery54 kJA phone battery stores electrical energy to power a mobile phone.
EnergyElectric car battery216 MJAn electric car battery stores energy to power an electric vehicle.
EnergyOne second of sunlight3.828 × 10¹¹ PJThe total energy emitted by the Sun in all directions over one second.
EnergyLaptop battery216 kJA laptop battery supplies electrical energy to a portable computer.
EnergyA 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.
EnergyOne litre of petrol34 MJOne litre of petrol is a standard quantity of liquid fuel used in combustion engines.
EnergyA 10 kWh day36 MJThis is the amount of electrical energy consumed by a household over the course of one day.