Megajoule to Kilowatt Hour Converter
Energy · unit-converter
Convert Megajoule 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: Megajoule (mj)
To: Kilowatt Hour (kwh)
About Megajoule
One megajoule is 1,000,000 J. It is common in fuel-content and engineering thermal calculations.
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 megajoules to kilowatt hours
1 megajoule is equal to 0.27777777777778 kilowatt hour when both are expressed in joule-equivalents:
1 mj = (1,000,000 J ÷ 3,600,000 J) kwh = 0.27777777777778 kwh
Each megajoule is defined as 1,000,000 J and each kilowatt hour as 3,600,000 J in this tool, so one mj equals 1,000,000 ÷ 3,600,000 kwh = 0.27777777777778 kwh.
Let d(mj) be the numeric amount in Megajoule (mj), and d(kwh) the amount in Kilowatt Hour (kwh). Then:
d(kwh) = d(mj) × (1,000,000 / 3,600,000)
Equivalently, divide by how many mj fit into one kwh (joules per kwh divided by joules per mj):
d(kwh) = d(mj) ÷ 3.6
Or: kilowatt hour = megajoule ÷ 3.6
Examples
Example #1: Convert 1 mj to kilowatt hour
1 mj = 1 mj × (1,000,000/3,600,000) kwh = 0.2777777778 kwh
1 mj = 1 mj ÷ 3.6 = 0.2777777778 kwh
Example #2: Convert 10 mj to kilowatt hour
10 mj = 10 mj × (1,000,000/3,600,000) kwh = 2.7777777778 kwh
10 mj = 10 mj ÷ 3.6 = 2.7777777778 kwh
Summary
To convert Megajoule to Kilowatt Hour, multiply the value in mj by the ratio of joules per mj divided by joules per kwh. Equivalently: value_kwh = value_mj × (1000000 / 3600000). Numerically, 1 mj equals 0.2777777777777778 kwh.
Relationship context
You are converting between SI energy (joules) (Megajoules) and electrical energy (watt-hours) (Kilowatt Hours). All values are mapped through joules first. The numeric factor is 2.777778e-1.
Conversion tables
| Megajoule (mj) | Kilowatt Hour (kwh) |
|---|---|
| 0.1 | 0.0277777778 |
| 1 | 0.2777777778 |
| 2 | 0.5555555556 |
| 3 | 0.8333333333 |
| 4 | 1.1111111111 |
| 5 | 1.3888888889 |
| 6 | 1.6666666667 |
| 7 | 1.9444444444 |
| 8 | 2.2222222222 |
| 9 | 2.5 |
| Megajoule (mj) | Kilowatt Hour (kwh) |
|---|---|
| 10 | 2.7777777778 |
| 20 | 5.5555555556 |
| 30 | 8.3333333333 |
| 40 | 11.1111111111 |
| 50 | 13.8888888889 |
| 60 | 16.6666666667 |
| 70 | 19.4444444444 |
| 80 | 22.2222222222 |
| 90 | 25 |
| 100 | 27.7777777778 |