Gigajoule to Kilowatt Hour Converter
Energy · unit-converter
Convert Gigajoule to Kilowatt Hour with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: Gigajoule (gj)
To: Kilowatt Hour (kwh)
About Gigajoule
One gigajoule is 1,000,000,000 J. Utility-scale and fuel-system reporting commonly use GJ.
About Kilowatt Hour
One kilowatt-hour is the energy from 1 kW of power for one hour: 1 kWh = 3,600,000 J. Utility bills and battery specs often use kWh.
How to convert gigajoules to kilowatt hours
1 gigajoule is equal to 277.77777777777777 kilowatt hour when both are expressed in joule-equivalents:
1 gj = (1,000,000,000 J ÷ 3,600,000 J) kwh = 277.77777777777777 kwh
Each gigajoule is defined as 1,000,000,000 J and each kilowatt hour as 3,600,000 J in this tool, so one gj equals 1,000,000,000 ÷ 3,600,000 kwh = 277.77777777777777 kwh.
Let d(gj) be the numeric amount in Gigajoule (gj), and d(kwh) the amount in Kilowatt Hour (kwh). Then:
d(kwh) = d(gj) × (1,000,000,000 / 3,600,000)
Equivalently, divide by how many gj fit into one kwh (joules per kwh divided by joules per gj):
d(kwh) = d(gj) ÷ 0.0036
Or: kilowatt hour = gigajoule ÷ 0.0036
Examples
Example #1: Convert 1 gj to kilowatt hour
1 gj = 1 gj × (1,000,000,000/3,600,000) kwh = 277.777777778 kwh
1 gj = 1 gj ÷ 0.0036 = 277.777777778 kwh
Example #2: Convert 10 gj to kilowatt hour
10 gj = 10 gj × (1,000,000,000/3,600,000) kwh = 2777.77777778 kwh
10 gj = 10 gj ÷ 0.0036 = 2777.77777778 kwh
Summary
To convert Gigajoule to Kilowatt Hour, multiply the value in gj by the ratio of joules per gj divided by joules per kwh. Equivalently: value_kwh = value_gj × (1000000000 / 3600000). Numerically, 1 gj equals 277.77777777777777 kwh.
Relationship context
You are converting between SI energy (joules) (Gigajoules) and electrical energy (watt-hours) (Kilowatt Hours). All values are mapped through joules first. The numeric factor is 2.777778e+2.
Conversion tables
| Gigajoule (gj) | Kilowatt Hour (kwh) |
|---|---|
| 0.1 | 27.7777777778 |
| 1 | 277.777777778 |
| 2 | 555.555555556 |
| 3 | 833.333333333 |
| 4 | 1,111.11111111 |
| 5 | 1,388.88888889 |
| 6 | 1,666.66666667 |
| 7 | 1,944.44444444 |
| 8 | 2,222.22222222 |
| 9 | 2,500 |
| Gigajoule (gj) | Kilowatt Hour (kwh) |
|---|---|
| 10 | 2,777.77777778 |
| 20 | 5,555.55555556 |
| 30 | 8,333.33333333 |
| 40 | 11,111.1111111 |
| 50 | 13,888.8888889 |
| 60 | 16,666.6666667 |
| 70 | 19,444.4444444 |
| 80 | 22,222.2222222 |
| 90 | 25,000 |
| 100 | 27,777.7777778 |