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Power and Energy

GJtokWh

Convert gigajoules (GJ) to kilowatt-hours (kWh).

Factor1 GJ = 277.7778 kWh

Converter

GJ

Accepts numbers or expressions, e.g. 150 + 14.7

Result
277.778kWh

Rendered to 6 significant figures.

Formula

Formula
kWh = GJ × 277.7778

Multiply any value in gigajoules by 277.7778 to obtain the value in kilowatt-hours.

Worked example

Convert 1 GJ to kWh.

  1. 01Start with 1 GJ.
  2. 02Multiply by the conversion factor: 1 × 277.7778 = 277.778 kWh.
Result1 GJ = 277.778 kWh

Conversion table

GJkWh
1277.78
2555.56
51388.9
102777.8
205555.6
5013889
10027778
20055556
5001.3889e+5
10002.7778e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from GJ to kWh?
1 GJ equals 277.7778 kWh. To convert, multiply the value in gigajoules by 277.7778.
How do I convert 1 GJ to kWh?
1 GJ = 277.778 kWh. For any value, multiply by 277.7778.
How do I convert kWh back to GJ?
Divide by the same factor — or equivalently, multiply by 0.0036. So 1 kWh = 0.0036 GJ.
When would I need to convert gigajoule to kilowatt-hour?
Energy conversions are needed when reconciling fuel/electrical billing, calculating thermal duties, and aligning calorimetry or HHV/LHV figures across data sources.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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