Megajoules to Joules Converter

1 MJ = 1,000,000 J. Type any value below for the exact joules figure.

MJ
1,000,000J

1 MJ = 1,000,000 J

Conversion summary

1 MJ = 1,000,000 J

Formula
Joule = Megajoule × 1,000,000
Category
Energy and Power
Units
MJ → J

1 MJ in other units

Values update with the converter above. Select a row to open that conversion's detailed page.

  • Joule1,000,000 J
  • Kilojoule1,000 kJ
  • Watt-hour277.7778 Wh
  • Kilowatt-hour0.2777778 kWh
  • Calorie239,005.7 cal
  • Kilocalorie239.0057 kcal
  • BTU947.8171 Btu
  • Therm0.009478171 th
  • Quadrillion BTU9.47817E-13 quad BTU
  • Electronvolt6.24151E24 eV

How do you convert megajoules to joules?

To convert megajoules to joules, multiply the number of megajoules by 1,000,000. 1 MJ = 1,000,000 J.

Conversion formula

Joule = Megajoule × 1,000,000

Megajoules to joules conversion table

Megajoules (MJ)Joules (J)
0.001 MJ1,000 J
0.01 MJ10,000 J
0.1 MJ100,000 J
1 MJ1,000,000 J
5 MJ5,000,000 J
10 MJ10,000,000 J

What is Megajoule?

Megajoule is a unit used in energy and power conversions and practical measurement work.

Short history of Megajoule

The prefix mega- (one million, from Greek megas, great) was formally adopted with the SI in 1960; the megajoule is used for fuel energy content and large-scale energy balances.

Open the Megajoule unit guide

What is Joule?

The joule is the SI derived unit of energy. It is used for work, heat and energy quantities.

Short history of Joule

The joule became the standard SI reference for energy as mechanics and thermodynamics were unified in modern measurement.

Open the Joule unit guide

Frequently asked questions

What is 1 Megajoule in Joule?

1 MJ = 1,000,000 J.

How do you convert Megajoule to Joule?

To convert megajoules to joules, multiply the number of megajoules by 1,000,000. 1 MJ = 1,000,000 J.

Frequently asked questions

How many joules are in 1 megajoule?

1 MJ = 1,000,000 J.

How do you convert megajoules to joules?

To convert megajoules to joules, multiply the number of megajoules by 1,000,000. 1 MJ = 1,000,000 J.

How many megajoules are in 1 joule?

1 J = 0.000001 MJ.

Sources

  1. BIPM: The International System of Units (SI Brochure)
  2. NIST: NIST Guide to the SI — Appendix B.8: Factors for Units Listed Alphabetically
  3. NIST: Guide to the SI — Conversion Factors

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