Kilojoule to Joule Converter 2025 - Energy Conversion Calculator

Kilojoule to Joule Converter

Convert kilojoules to joules for energy and nutrition calculations

Formula: joules = kilojoules × 1,000

Note: 1 kilojoule = 1,000 joules

About Kilojoules

The kilojoule is a unit of energy commonly used in nutrition labeling.

  • Used on food nutrition labels
  • 1 kilojoule = 1,000 joules
  • Common in metric countries
  • Symbol: kJ

About Joules

The joule is the SI unit of energy named after James Prescott Joule.

  • SI base unit of energy
  • Used in physics calculations
  • 1 joule = 1 newton-meter
  • Symbol: J

Energy Conversion Examples

Kilojoules Joules Context
1 kJ 1,000 J Small snack
10 kJ 10,000 J Light exercise
100 kJ 100,000 J Small meal
2000 kJ 2,000,000 J Daily energy intake

Conversion Formula & Energy Notes

Formula

Joules = Kilojoules × 1,000

Kilojoules = Joules ÷ 1,000

Applications

  • • Nutrition and food labeling
  • • Physics and engineering
  • • Exercise energy calculations
  • • Thermodynamics studies