Converter

Kilocalorie a Kilojoule

Food calories are kilocalories. Utility bills use kilowatt-hours. Both are energy units, but in different contexts.

Unit console

Converter unidades com fórmula, contexto e precisão

UnitCloud é um laboratório local de medição para uso diário, engenharia, TI, energia, mobilidade e design.

O que quer converter?

De1 kcal

Resultado4,184 kJ

Factor1 kcal = 4,184 kJ

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011 kcal = 4,184 kJ

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Erro comum

Food calories are kilocalories. Utility bills use kilowatt-hours. Both are energy units, but in different contexts.

03Unidade base: J

1 kcal = 4184 J. Then the value is converted through the base unit J into Kilojoule.

Tabela

Kilocalorie	Kilojoule
1	4,184
100	418,4
250	1046
500	2092
2000	8368

Fórmula

1 kcal = 4184 J. Then the value is converted through the base unit J into Kilojoule.

Fontes

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

Conversões relacionadas

Kilowatt-hour a JoulekWh → JEnergia Joule a Kilowatt-hourJ → kWhEnergia Kilojoule a KilocaloriekJ → kcalEnergia British thermal unit a Kilowatt-hourBTU → kWhEnergia

Search and practice paths

FórmulaTabelaExamplesErro comumEveryday/engineeringExcel/CSVConversor em lotePrint view

kWhEnergy prices, kWh and technical work

Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources current as of May 2026. Energia. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.

Common questions

What is the factor for Kilocalorie a Kilojoule?

1 kcal = 4,184 kJ

Which formula does Kilocalorie a Kilojoule use?

1 kcal = 4184 J. Then the value is converted through the base unit J into Kilojoule.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.