ucUnitCloudInternational unit matrix

Converti

Joule a Kilowatt-hour

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

Unit console

Convertire unità con formula, contesto e precisione

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Da1 J
Risultato0,00000028 kWh
Factor1 J = 0,0000002778 kWh
Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011000 J = 0,00027778 kWh

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

02Errore comune

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

03Unità base: J

base. Then the value is converted through the base unit J into Kilowatt-hour.

Tabella

JouleKilowatt-hour
10000,00027778
1.000.0000,27777778
3.600.0001

Formula

base. Then the value is converted through the base unit J into Kilowatt-hour.

Fonti

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

Conversioni collegate

Kilowatt-hour a JoulekWh → JEnergiaKilocalorie a Kilojoulekcal → kJEnergiaKilojoule a KilocaloriekJ → kcalEnergiaBritish thermal unit a Kilowatt-hourBTU → kWhEnergia

Search and practice paths

Search and practice paths

FormulaTabellaExamplesErrore comuneEveryday/engineeringExcel/CSVConvertitore batchPrint 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 Joule a Kilowatt-hour?

1 J = 0,0000002778 kWh

Which formula does Joule a Kilowatt-hour use?

base. Then the value is converted through the base unit J into Kilowatt-hour.

When should I verify the result?

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