Kilowatt Hour to Gigajoule Converter
Energy · unit-converter
Convert Kilowatt Hour to Gigajoule 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: Kilowatt Hour (kwh)
To: Gigajoule (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.
About Gigajoule
One gigajoule is 1,000,000,000 J. Utility-scale and fuel-system reporting commonly use GJ.
How to convert kilowatt hours to gigajoules
1 kilowatt hour is equal to 0.0036 gigajoule when both are expressed in joule-equivalents:
1 kwh = (3,600,000 J ÷ 1,000,000,000 J) gj = 0.0036 gj
Each kilowatt hour is defined as 3,600,000 J and each gigajoule as 1,000,000,000 J in this tool, so one kwh equals 3,600,000 ÷ 1,000,000,000 gj = 0.0036 gj.
Let d(kwh) be the numeric amount in Kilowatt Hour (kwh), and d(gj) the amount in Gigajoule (gj). Then:
d(gj) = d(kwh) × (3,600,000 / 1,000,000,000)
Equivalently, divide by how many kwh fit into one gj (joules per gj divided by joules per kwh):
d(gj) = d(kwh) ÷ 277.77777777777777
Or: gigajoule = kilowatt hour ÷ 277.77777777777777
Examples
Example #1: Convert 1 kwh to gigajoule
1 kwh = 1 kwh × (3,600,000/1,000,000,000) gj = 0.0036 gj
1 kwh = 1 kwh ÷ 277.77777777777777 = 0.0036 gj
Example #2: Convert 10 kwh to gigajoule
10 kwh = 10 kwh × (3,600,000/1,000,000,000) gj = 0.036 gj
10 kwh = 10 kwh ÷ 277.77777777777777 = 0.036 gj
Summary
To convert Kilowatt Hour to Gigajoule, multiply the value in kwh by the ratio of joules per kwh divided by joules per gj. Equivalently: value_gj = value_kwh × (3600000 / 1000000000). Numerically, 1 kwh equals 0.0036 gj.
Relationship context
You are converting between electrical energy (watt-hours) (Kilowatt Hours) and SI energy (joules) (Gigajoules). All values are mapped through joules first. The numeric factor is 3.600000e-3.
Conversion tables
| Kilowatt Hour (kwh) | Gigajoule (gj) |
|---|---|
| 0.1 | 0.00036 |
| 1 | 0.0036 |
| 2 | 0.0072 |
| 3 | 0.0108 |
| 4 | 0.0144 |
| 5 | 0.018 |
| 6 | 0.0216 |
| 7 | 0.0252 |
| 8 | 0.0288 |
| 9 | 0.0324 |
| Kilowatt Hour (kwh) | Gigajoule (gj) |
|---|---|
| 10 | 0.036 |
| 20 | 0.072 |
| 30 | 0.108 |
| 40 | 0.144 |
| 50 | 0.18 |
| 60 | 0.216 |
| 70 | 0.252 |
| 80 | 0.288 |
| 90 | 0.324 |
| 100 | 0.36 |