Megajoules to Gigajoules (MJ → GJ)
Formula
1 MJ = 0.001 GJConversion Table
| MJ | GJ |
|---|---|
| 0 | 0 |
| 1.0000 | 0.0010000 |
| 2.0000 | 0.0020000 |
| 3.0000 | 0.0030000 |
| 4.0000 | 0.0040000 |
| 5.0000 | 0.0050000 |
| 6.0000 | 0.0060000 |
| 7.0000 | 0.0070000 |
| 8.0000 | 0.0080000 |
| 9.0000 | 0.0090000 |
| 10.000 | 0.010000 |
| 11.000 | 0.011000 |
| 12.000 | 0.012000 |
| 13.000 | 0.013000 |
| 14.000 | 0.014000 |
| 15.000 | 0.015000 |
| 16.000 | 0.016000 |
| 17.000 | 0.017000 |
| 18.000 | 0.018000 |
| 19.000 | 0.019000 |
| MJ | GJ |
|---|---|
| 20.000 | 0.020000 |
| 21.000 | 0.021000 |
| 22.000 | 0.022000 |
| 23.000 | 0.023000 |
| 24.000 | 0.024000 |
| 25.000 | 0.025000 |
| 26.000 | 0.026000 |
| 27.000 | 0.027000 |
| 28.000 | 0.028000 |
| 29.000 | 0.029000 |
| 30.000 | 0.030000 |
| 31.000 | 0.031000 |
| 32.000 | 0.032000 |
| 33.000 | 0.033000 |
| 34.000 | 0.034000 |
| 35.000 | 0.035000 |
| 36.000 | 0.036000 |
| 37.000 | 0.037000 |
| 38.000 | 0.038000 |
| 39.000 | 0.039000 |
| MJ | GJ |
|---|---|
| 40.000 | 0.040000 |
| 41.000 | 0.041000 |
| 42.000 | 0.042000 |
| 43.000 | 0.043000 |
| 44.000 | 0.044000 |
| 45.000 | 0.045000 |
| 46.000 | 0.046000 |
| 47.000 | 0.047000 |
| 48.000 | 0.048000 |
| 49.000 | 0.049000 |
| 50.000 | 0.050000 |
| 51.000 | 0.051000 |
| 52.000 | 0.052000 |
| 53.000 | 0.053000 |
| 54.000 | 0.054000 |
| 55.000 | 0.055000 |
| 56.000 | 0.056000 |
| 57.000 | 0.057000 |
| 58.000 | 0.058000 |
| 59.000 | 0.059000 |
| MJ | GJ |
|---|---|
| 60.000 | 0.060000 |
| 61.000 | 0.061000 |
| 62.000 | 0.062000 |
| 63.000 | 0.063000 |
| 64.000 | 0.064000 |
| 65.000 | 0.065000 |
| 66.000 | 0.066000 |
| 67.000 | 0.067000 |
| 68.000 | 0.068000 |
| 69.000 | 0.069000 |
| 70.000 | 0.070000 |
| 71.000 | 0.071000 |
| 72.000 | 0.072000 |
| 73.000 | 0.073000 |
| 74.000 | 0.074000 |
| 75.000 | 0.075000 |
| 76.000 | 0.076000 |
| 77.000 | 0.077000 |
| 78.000 | 0.078000 |
| 79.000 | 0.079000 |
Megajoules to Gigajoules Conversion
Converting Megajoules (MJ) to Gigajoules (GJ) is a common energy and power conversion. 1 MJ equals 0.001 GJ. For example, 100 MJ is equal to 0.1 GJ.
Quick Mental Math: Megajoules to Gigajoules
10 megajoules is 0.01 gigajoules, so use that as the mental anchor.
Why is converting Megajoules to Gigajoules tricky?
megajoules to gigajoules uses an awkward ratio, so people often round too early or move the decimal the wrong way.
Quick Reference Values
1 MJ = 0.001 GJ. 5 MJ = 0.005 GJ. 10 MJ = 0.01 GJ. 25 MJ = 0.025 GJ. 50 MJ = 0.05 GJ. 100 MJ = 0.1 GJ.
What is Megajoules?
Megajoules (MJ) is a unit of energy and power. A megajoule equals one million joules, the SI unit of energy, defined as the work done when applying a force of one newton over one meter. One MJ equals 1,000,000 J exactly. It is used to quantify large energy amounts in scientific, industrial, and engineering contexts [bipm-si-brochure]. The joule was named after James Prescott Joule in the 19th century, honoring his work on energy. The megajoule as a multiple of the joule was standardized with the SI system established by BIPM in 1960 to handle large-scale energy measurements [bipm-si-brochure]. Megajoules are widely used internationally in energy production, mechanical work quantification, and fuel energy content. Industries such as electricity generation, chemical manufacturing, and automotive engineering rely on MJ for reporting energy values [nist-si-guide].
What is Gigajoules?
Gigajoules (GJ) is a unit of energy and power. The gigajoule is a unit of energy equal to one billion joules (10⁹ J). One joule is the energy transferred when applying one newton of force over one meter, so a gigajoule represents a large energy quantity used in industrial and scientific applications [bipm-si-brochure]. The joule was defined in the 19th century and named after James Prescott Joule. The prefix 'giga-' was adopted internationally as part of SI prefixes in 1960 by the CGPM to denote a factor of 10⁹, formalizing the gigajoule as an SI derived unit [cgpm-resolutions]. Gigajoules are widely used in energy industries such as natural gas and electricity production, especially in Canada and Australia. They appear in energy statistics and engineering calculations per standards from BIPM and NIST [bipm-si-brochure][nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: mega joules, megajoule, mega-joules, megajoules energy, giga joules, giga-joules, giga joule, gigajoule. All of these refer to the Megajoules to Gigajoules conversion.