Energy Converter
Convert between energy / work / heat units
0.000007
Wh
rate：1 mJ = 2.77777778e-7 Wh
Results in all units
26 mJ| Unit | Symbol | Value |
|---|---|---|
| Metric | ||
| Joules | J | 0.026 |
| Kilojoules | kJ | 0.000026 |
| Megajoules | MJ | 2.6e-8 |
| Millijoules | mJ | 26 |
| Calories | cal | 0.006214 |
| Kilocalories | kcal | 0.000006 |
| Calories (nutritional) | Cal | 0.000006 |
| Watt hours | Wh | 0.000007 |
| Kilowatt hours | kWh | 7.222222e-9 |
| Megawatt hours | MWh | 7.222222e-12 |
| Ergs | erg | 260,000 |
| Electron volts | eV | 1.622792e+17 |
| Imperial / Other | ||
| British thermal units | BTU | 0.000025 |
| Foot pounds | ft·lb | 0.019177 |
| Horsepower hours | hp·h | 9.68516e-9 |
| Therms | thm | 2.464325e-10 |
| Tons of TNT | tTNT | 6.214149e-12 |
Popular Energy Conversions
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7.222222e-6 Watt hours
81 Watt hours
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0.081 Kilowatt hours
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110.1816 Kilocalories
30 Kilocalories
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3e-5 Tons of TNT
Common Scenarios
Energy conversion is widely used in energy trading, nutrition, and engineering thermodynamics. In nutrition, we often look at food labels converting between kilocalories (kcal) and kilojoules (kJ). On electricity bills, kilowatt-hours (kWh) are the billing unit.
History & Background
The concept of energy took a long time to form. Later, James Joule proved through his "mechanical equivalent of heat" experiment that heat and work are interconvertible, leading to the energy unit "joule" named after him.
Conversion Details
Energy conversion is based on the joule (J), covering work, heat and electrical energy.
Common conversions: 1 kcal = 4.184 kJ, 1 kWh = 3.6 MJ, 1 BTU ≈ 1,055 J.