Convert gigajoule to millijoule
Please provide values below to convert gigajoule [GJ] to millijoule [mJ], or Convert millijoule to gigajoule.
1 GJ = 1e+12 mJ. To convert gigajoule to millijoule, multiply the value by 1e+12; to go the other way, divide by it (1 mJ = 1.0000e-12 GJ). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 GJ = 1e+12 mJ
- 1 mJ = 1.0000e-12 GJ
- 10 GJ = 1.0000e+13 mJ
- 100 GJ = 1.0000e+14 mJ
How to Convert Gigajoule to Millijoule
1 GJ = 1000000000000 mJ
Example: convert 15 GJ to mJ:
15 GJ = 15 × 1000000000000 mJ = 15000000000000 mJ
Gigajoule to Millijoule Conversion Table
| gigajoule | millijoule |
|---|---|
| 1 GJ | 1e+12 mJ |
| 2 GJ | 2.0000e+12 mJ |
| 3 GJ | 3.0000e+12 mJ |
| 5 GJ | 5.0000e+12 mJ |
| 10 GJ | 1.0000e+13 mJ |
| 20 GJ | 2.0000e+13 mJ |
| 50 GJ | 5.0000e+13 mJ |
| 100 GJ | 1.0000e+14 mJ |
| 500 GJ | 5.0000e+14 mJ |
| 1000 GJ | 1.0000e+15 mJ |
Gigajoule
A gigajoule (GJ) is a unit of energy equal to one billion joules, used to measure large amounts of energy such as in power generation and fuel consumption.
History/Origin
The gigajoule was introduced as part of the International System of Units (SI) to provide a standard measure for large-scale energy quantities, especially in scientific and industrial contexts, gaining prominence in the 20th century.
Current Use
Gigajoules are commonly used today to quantify energy in fields like energy production, consumption, and engineering, particularly for large-scale systems such as power plants, fuel storage, and energy audits.
Millijoule
A millijoule (mJ) is a unit of energy equal to one thousandth of a joule, where 1 joule equals 1 newton meter or 1 kg·m²/s².
History/Origin
The millijoule is derived from the SI base unit joule, with the prefix 'milli' indicating a factor of 10⁻³. It has been used in scientific and engineering contexts to measure small amounts of energy, especially in fields like electronics and biomechanics.
Current Use
The millijoule is commonly used today to quantify small energy quantities in electronics, biomedical applications, and energy measurements where precision at a small scale is required.
Frequently Asked Questions
What is 1 gigajoule in millijoule?
1 gigajoule (GJ) = 1e+12 millijoule (mJ).
How do you convert gigajoule to millijoule?
Multiply the gigajoule value by 1e+12. For example, 25 GJ × 1e+12 = 2.5000e+13 mJ.
What is 10 gigajoule in millijoule?
10 GJ = 1.0000e+13 mJ.
Which unit is larger, the gigajoule or the millijoule?
The gigajoule is the larger unit: 1 GJ = 1e+12 mJ.