1 joule (J) = 0.001 kilojoule (kJ)
1 kilojoule (kJ) = 1000 joules (J)
Joule (J)
• A joule is the SI unit of energy.
• It is the energy transferred when a force of one newton moves an object one meter in the direction of the force.
• It can also be defined as the heat produced when a 1-ampere current flows through 1 ohm resistance for 1 second.
• In SI base units, 1 J = 1 kg·m²/s².
• Named after Jam...
1 joule (J) = 0.001 kilojoule (kJ)
1 kilojoule (kJ) = 1000 joules (J)
Joule (J)
• A joule is the SI unit of energy.
• It is the energy transferred when a force of one newton moves an object one meter in the direction of the force.
• It can also be defined as the heat produced when a 1-ampere current flows through 1 ohm resistance for 1 second.
• In SI base units, 1 J = 1 kg·m²/s².
• Named after James Prescott Joule, an English physicist who studied the relationship between heat and mechanical work.
• Commonly used in science to measure work, heat, and energy in physics, chemistry, and engineering.
Kilojoule (kJ)
• A kilojoule is equal to 1,000 joules.
• It uses the SI prefix kilo- to represent multiples of 1,000.
• Widely used as a unit of food energy in many countries. Food packaging often shows kilojoules, sometimes alongside kilocalories (Calories).
• Apart from food labelling, kilojoules are also used in scientific and engineering contexts worldwide.
Conversion Formula
1 joule (J) = 0.001 kilojoule (kJ)
1 kilojoule (kJ) = 1000 joules (J)
Example: Convert 15 J to kJ: 15 × 0.001 = 0.015 kJ
Quick Reference Conversions
• 0.01 J = 0.00001 kJ
• 0.1 J = 0.0001 kJ
• 1 J = 0.001 kJ
• 2 J = 0.002 kJ
• 5 J = 0.005 kJ
• 10 J = 0.01 kJ
• 20 J = 0.02 kJ
• 50 J = 0.05 kJ
• 100 J = 0.1 kJ
• 1000 J = 1 kJ
