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Energieumrechner

Convert energy units: joules, kilojoules, calories, kilocalories (food Calories), watt-hours, kilowatt-hours, BTU, electronvolts, foot-pounds and therms.

Die folgende Anleitung ist noch nicht auf Deutsch verfügbar und wird auf Englisch angezeigt. Der Rechner selbst ist vollständig übersetzt.

So verwenden Sie diesen Rechner

  1. Enter an amount of energy.
  2. Choose the from and to units.

Formel

All units are defined relative to the joule, the SI unit of energy.

1 kcal (food Calorie) = 4,184 J = 4.184 kJ
1 kWh = 3.6 MJ
1 BTU (IT) = 1,055.06 J
1 eV = 1.602176634 × 10⁻¹⁹ J

Examples

  1. 100 kcal × 4.184 = 418.4 kJ.
  2. 1 kWh ≈ 3,412 BTU.

Häufige Fragen

Is a food Calorie the same as a calorie?

No. A food Calorie (capital C) is a kilocalorie, which is 1,000 small calories. Nutrition labels in kJ divide by 4.184 to get kcal.

What is a kilowatt-hour?

The energy used by a 1,000-watt device running for one hour. It's the unit on most electricity bills.

What is a therm?

100,000 BTU, used for natural gas billing in the US and UK.