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Energy

Just how much energy is 1 kilowatt-hour?

Daily life

1 kWh

Scale

ENERGY STORED OR TRANSFERRED

1 kilowatt-hour

The quantity is exact as entered.

3.6 MJEnergy
0
A 2,000 kcal food day

Daily food energy is the chemical energy a person obtains from all food and drink consumed over a day.

8.368 MJEnergy
0
Bar length represents energy. Equal energy does not imply the same temperature, power or usefulness.

A little perspective

The energy of a 2,000 kcal food day is about 2.32 times 1 kilowatt-hour.

Measurements, assumptions & sources +

1 kilowatt-hour

Energy: 3.6 MJ; definition.

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

NIST — SI conversion factors

A 2,000 kcal food day

Energy: 8.368 MJ; defined energy model.

A defined energy amount for comparison, not a personal dietary recommendation.

Defined examples — our methodology

The marked energy is calibrated. Unmeasured illustration details are representative.

Measurement details

Why these numbers?

Compare 1 kilowatt-hour with the energy of a 2,000 kcal food day. The notes below explain how each value was chosen.

1 kilowatt-hour

3.6 MJ

Energy · definition

The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.

A 2,000 kcal food day

8.368 MJ

Energy · defined energy model

A defined energy amount for comparison, not a personal dietary recommendation.

Comparing
Energy ↔ Energy
Relative size
The energy of a 2,000 kcal food day is about 2.32 times 1 kilowatt-hour. The energy of a 2,000 kcal food day is approximately 132% greater than 1 kilowatt-hour.

How to read the visual

The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.

  • The energy of a 2,000 kcal food day: This is an illustrative comparison value, not a claim that every example is the same.

Energy is an amount; power describes the rate of energy transfer or use.

3,600,000 Jjoules
860.42 kcalkilocalories

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