Kilowatt Hour to Megajoule Converter
Energy · unit-converter
Convert Kilowatt Hour to Megajoule 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: Megajoule (mj)
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 Megajoule
One megajoule is 1,000,000 J. It is common in fuel-content and engineering thermal calculations.
How to convert kilowatt hours to megajoules
1 kilowatt hour is equal to 3.6 megajoule when both are expressed in joule-equivalents:
1 kwh = (3,600,000 J ÷ 1,000,000 J) mj = 3.6 mj
Each kilowatt hour is defined as 3,600,000 J and each megajoule as 1,000,000 J in this tool, so one kwh equals 3,600,000 ÷ 1,000,000 mj = 3.6 mj.
Let d(kwh) be the numeric amount in Kilowatt Hour (kwh), and d(mj) the amount in Megajoule (mj). Then:
d(mj) = d(kwh) × (3,600,000 / 1,000,000)
Equivalently, divide by how many kwh fit into one mj (joules per mj divided by joules per kwh):
d(mj) = d(kwh) ÷ 0.27777777777778
Or: megajoule = kilowatt hour ÷ 0.27777777777778
Examples
Example #1: Convert 1 kwh to megajoule
1 kwh = 1 kwh × (3,600,000/1,000,000) mj = 3.6 mj
1 kwh = 1 kwh ÷ 0.27777777777778 = 3.6 mj
Example #2: Convert 10 kwh to megajoule
10 kwh = 10 kwh × (3,600,000/1,000,000) mj = 36 mj
10 kwh = 10 kwh ÷ 0.27777777777778 = 36 mj
Summary
To convert Kilowatt Hour to Megajoule, multiply the value in kwh by the ratio of joules per kwh divided by joules per mj. Equivalently: value_mj = value_kwh × (3600000 / 1000000). Numerically, 1 kwh equals 3.6 mj.
Relationship context
You are converting between electrical energy (watt-hours) (Kilowatt Hours) and SI energy (joules) (Megajoules). All values are mapped through joules first. The numeric factor is 3.600000e+0.
Conversion tables
| Kilowatt Hour (kwh) | Megajoule (mj) |
|---|---|
| 0.1 | 0.36 |
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 4 | 14.4 |
| 5 | 18 |
| 6 | 21.6 |
| 7 | 25.2 |
| 8 | 28.8 |
| 9 | 32.4 |
| Kilowatt Hour (kwh) | Megajoule (mj) |
|---|---|
| 10 | 36 |
| 20 | 72 |
| 30 | 108 |
| 40 | 144 |
| 50 | 180 |
| 60 | 216 |
| 70 | 252 |
| 80 | 288 |
| 90 | 324 |
| 100 | 360 |