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Kilojoule to Joule Converter

Kostenloser Energierechner, Joule, Kalorien, Kilowattstunden und BTU Sofort Umrechnen

1Kilojoule=1000Joule
1 Joule = 0.001 Kilojoule

Kilojoule

Symbol
kJ
System
Metric/Imperial
Dimension
Various

Joule

Symbol
J
System
Metric/Imperial
Dimension
Various

Quick Reference Table

KilojouleJouleJouleKilojoule
1100010.001
2200020.002
3300030.003
5500050.005
1010000100.01
2525000250.025
5050000500.05
1001000001000.1
5005000005000.5
1000100000010001

Conversion Formula

Joule = Kilojoule × 1000

Kilojoule = Joule × 0.001

Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 1000.

How to convert Kilojoule to Joule

Multiply the value in kilojoule by 1000 to get joule. For example, 5 Kilojoule = 5000 Joule. All results in the energie converter update instantly as you type, so you can see every unit at once without manual math.

Common mistakes

Do not round the factor to 1000 too early — keep full precision until the final display. For energie, always verify critical calculations (medicine, engineering) with a second source.

FAQ

How many Joule in 1 Kilojoule?
1 Kilojoule = 1000 Joule.
How many Kilojoule in 1 Joule?
1 Joule = 0.001 Kilojoule.
What is the source?
BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.

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