Kilowatt Hour to Gigajoule Formula
GJ = kWh x 0.0036
Conversion factors follow SI relationships published by BIPM and NIST, where those standards apply.
Kilowatt Hour to Gigajoule Converter
Quick Answer
1 kWh = 0.0036 GJ
Formula: Gigajoule = Kilowatt Hour x 0.0036
Quick values
Worked examples
Convert 1 kWh to GJ
GJ = 1 x 0.0036
Result: 1 kWh = 0.0036 GJ
Convert 10 kWh to GJ
GJ = 10 x 0.0036
Result: 10 kWh = 0.036 GJ
Convert 100 kWh to GJ
GJ = 100 x 0.0036
Result: 100 kWh = 0.36 GJ
About Kilowatt Hour and Gigajoule
The kilowatt hour (kWh) and the gigajoule (GJ) both measure energy. 1 kWh equals 0.0036 GJ.
Category hub: Energy Conversion · Conversion charts · Conversion formulas
Kilowatt Hour to Gigajoule Conversion Table
| Kilowatt Hour (kWh) | Gigajoule (GJ) |
|---|---|
| 1 kWh | 0.0036 GJ |
| 5 kWh | 0.018 GJ |
| 10 kWh | 0.036 GJ |
| 25 kWh | 0.09 GJ |
| 50 kWh | 0.18 GJ |
| 100 kWh | 0.36 GJ |
| 250 kWh | 0.9 GJ |
| 500 kWh | 1.8 GJ |
| 1000 kWh | 3.6 GJ |
| 5000 kWh | 18 GJ |
Browse all conversion charts → · Browse conversion formulas →
Practical use cases for Kilowatt Hour to Gigajoule
Utility Billing and Energy Audits
Electric bills use kilowatt-hours while some engineering reports use gigajoules or megajoules. Audits convert so site energy totals match the utility statement.
Building Performance
Energy-use intensity and plant reports mix kWh, GJ, and BTU. Facility teams convert before comparing buildings or year-over-year totals.
Industrial Process Heat
Boiler and furnace energy inputs are often quoted in GJ or therms while electrical auxiliaries stay in kWh. Conversion is needed for a combined energy balance.
Transportation Fuels
Fuel-energy content is published in MJ/L or BTU/gal while EV comparisons use kWh. Analysts convert to a common energy unit before efficiency claims.
Scientific and Laboratory Work
Calorimetry and thermodynamics use joules and calories; applied reports often prefer kWh. Converting keeps experimental values comparable to plant data.
Carbon and Sustainability Reporting
GHG protocols accept energy in GJ or kWh depending on the factor table. Reporters convert activity data to the unit required by the emission factor.
Kilowatt Hour to Gigajoule FAQs
Common questions about converting kilowatt hour to gigajoule.
How do you convert kilowatt hour to gigajoule?
Use GJ = kWh x 0.0036. For example, 1 kWh = 0.0036 GJ.
What is 1 kWh in gigajoule?
1 kWh = 0.0036 GJ. See the conversion table above for more values.
Where does the kilowatt hour to gigajoule factor come from?
The calculator uses the shared conversion library aligned with SI relationships published by NIST and BIPM where those standards apply.
Is this kilowatt hour to gigajoule converter free?
Yes. The calculator and the printable reference table are completely free, with no sign-up required.
Charts and printable PDF
Use the matching kilowatt hour / gigajoule chart when you need a printable table or offline reference.
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