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Slice of bread
330 kJ
Microwave 10 minutes
0.17 kWh
Phone battery
40 kJ
Boil 1 liter water
334 kJ
1 kWh
3.6 MJ
Cup of coffee
5 kJ
Frequently Asked Questions
How much is 180 kilojoules in joules?
180 kilojoules equals 180000 joules.
How many joules is 1 kilojoule?
1 kilojoule equals 1000 joules.
How many kilojoules is 1 joule?
1 joule equals 0.001 kilojoules.
What is the difference between kilojoules and joules?
Both measure energy in SI. The main difference is usually scale: some units are convenient for smaller values, while others are used to express larger values more practically.
Where are kilojoules and joules used?
They are used in physics and engineering to measure work, energy, and heat; the most practical unit depends on the magnitude.
Why does 1 kilojoule equal 1000 joules?
Because the “kilo-” prefix means 1000. One kilojoule equals 1000 joules.