Energy Converters

Pick a family to convert between common scientific, electrical, and nutritional energy units using exact base relationships.

Available converter families

Scientific, electrical, and nutritional energy pairs

Every direction below is a dedicated page so each energy conversion has a direct mirror link.

Joules to Kilojoules Kilojoules to Joules Joules to Calories Calories to Joules Joules to Kilocalories Kilocalories to Joules Joules to Watt-hours Watt-hours to Joules Joules to Kilowatt-hours Kilowatt-hours to Joules Joules to BTU BTU to Joules Kilojoules to Calories Calories to Kilojoules Kilojoules to Kilocalories Kilocalories to Kilojoules Kilojoules to Watt-hours Watt-hours to Kilojoules Kilojoules to Kilowatt-hours Kilowatt-hours to Kilojoules Kilojoules to BTU BTU to Kilojoules Calories to Kilocalories Kilocalories to Calories Calories to Watt-hours Watt-hours to Calories Calories to Kilowatt-hours Kilowatt-hours to Calories Calories to BTU BTU to Calories Kilocalories to Watt-hours Watt-hours to Kilocalories Kilocalories to Kilowatt-hours Kilowatt-hours to Kilocalories Kilocalories to BTU BTU to Kilocalories Watt-hours to Kilowatt-hours Kilowatt-hours to Watt-hours Watt-hours to BTU BTU to Watt-hours Kilowatt-hours to BTU BTU to Kilowatt-hours

Related by Same Conversion

Example related converter

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Converter Encyclopedia

Explanation

Energy families here derive all factors from joules using exact base definitions: 1 kJ = 1000 J, 1 cal = 4.184 J, 1 kcal = 4184 J, 1 Wh = 3600 J, 1 kWh = 3,600,000 J, and 1 BTU (IT) = 1055.05585262 J.

How to use this hub

  1. Choose a converter family.
  2. If converting to/from grams from a volume unit, select an ingredient.
  3. For pure unit changes (volume↔volume or weight↔weight), use universal conversions.

If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.

Frequently Asked Questions

How are these energy factors derived?

Each factor is derived through joules so scientific, electrical, and nutritional units remain internally consistent.

Are these relationships fixed?

Yes. They use exact base definitions and fixed constants, so the conversion factors are stable and reproducible.

How do I switch direction?

Use the switch button to navigate directly to the mirror page for the reverse conversion.