Food kilocalorie
A food kilocalorie is the energy needed to raise the temperature of one kilogram of water by one degree Celsius, used to express food energy.
How big is it?
4.184 kJ of energy
Energy · defined energy model
A little perspective
About 1.72 times the defined nominal stored energy of Coin cell stored energy.
Coin cell stored energy: Coin cell stored energy is the total electrical energy that can be delivered by a small, disc-shaped lithium battery before depletion.
Measurements, assumptions & sources +
Food kilocalorie
One thermochemical kilocalorie, the unit commonly written Calorie on food labels.
Defined examples — our methodology
The marked energy is calibrated. Unmeasured illustration details are representative.
Coin cell stored energy
A defined CR2032 lithium coin cell rated at 3 V and 225 mAh stores a nominal 2,430 J by voltage × ampere-hours × 3,600. Delivered energy depends on load, cutoff voltage, temperature and ageing.
Energizer — CR2032 product datasheet
The marked defined nominal stored energy is calibrated. Unmeasured illustration details are representative.
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Why this measurement?
Why we use 4.184 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.
One thermochemical kilocalorie, the unit commonly written Calorie on food labels.
The identifying illustration and the numerical comparison remain separate. How calibrated comparisons work →
Recorded properties
Food kilocalorie dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 4.184 kJ | Not recorded | defined energy model |
Around this scale
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These links use compatible energy records, ordered around the selected value.
Nearest lower value · EnergyCoin 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.
Nearest higher value · EnergyPhone battery54 kJA phone battery stores electrical energy to power a mobile phone.Sources and method
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The source records and measurement method remain available for inspection.
More ways to see it
Curated comparisons
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Follow your curiosity.
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.EnergyCoin 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.
EnergyLaptop battery216 kJA laptop battery supplies electrical energy to a portable computer.
EnergyHeat 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.EnergyGolf 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.EnergyTennis 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.