Megajoule to Joule Converter
Energy · unit-converter
Convert Megajoule to Joule 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: Joule (j)
About Megajoule
One megajoule is 1,000,000 J. It is common in fuel-content and engineering thermal calculations.
About Joule
The joule is the SI unit of energy. All other units here are converted through fixed joule equivalents.
How to convert megajoules to joules
1 megajoule is equal to 1000000 joule when both are expressed in joule-equivalents:
1 mj = (1,000,000 J ÷ 1 J) j = 1000000 j
SI prefix: 1 MJ = 1,000,000 J.
Each megajoule is defined as 1,000,000 J and each joule as 1 J in this tool, so one mj equals 1,000,000 ÷ 1 j = 1000000 j.
Let d(mj) be the numeric amount in Megajoule (mj), and d(j) the amount in Joule (j). Then:
d(j) = d(mj) × (1,000,000 / 1)
Equivalently, divide by how many mj fit into one j (joules per j divided by joules per mj):
d(j) = d(mj) ÷ 0.000001
Or: joule = megajoule ÷ 0.000001
Examples
Example #1: Convert 1 mj to joule
1 mj = 1 mj × (1,000,000/1) j = 1000000 j
1 mj = 1 mj ÷ 0.000001 = 1000000 j
Example #2: Convert 10 mj to joule
10 mj = 10 mj × (1,000,000/1) j = 10000000 j
10 mj = 10 mj ÷ 0.000001 = 10000000 j
Summary
To convert Megajoule to Joule, multiply the value in mj by the ratio of joules per mj divided by joules per j. Equivalently: value_j = value_mj × (1000000 / 1). Numerically, 1 mj equals 1000000 j.
Relationship context
Both units are SI energy (joules). Conversions use fixed joule factors, so results stay consistent with the definitions in this converter. The factor from Megajoule to Joule is 1.000000e+6 (1 mj = 1000000 j).
Conversion tables
| Megajoule (mj) | Joule (j) |
|---|---|
| 0.1 | 100,000 |
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 4 | 4,000,000 |
| 5 | 5,000,000 |
| 6 | 6,000,000 |
| 7 | 7,000,000 |
| 8 | 8,000,000 |
| 9 | 9,000,000 |
| Megajoule (mj) | Joule (j) |
|---|---|
| 10 | 10,000,000 |
| 20 | 20,000,000 |
| 30 | 30,000,000 |
| 40 | 40,000,000 |
| 50 | 50,000,000 |
| 60 | 60,000,000 |
| 70 | 70,000,000 |
| 80 | 80,000,000 |
| 90 | 90,000,000 |
| 100 | 100,000,000 |