Fuel Efficiency — Mass Converter
Convert between 6 fuel efficiency — mass units.
About Fuel Efficiency — Mass
This is energy content by weight — how much energy a kilogram of fuel releases. Petrol is around 46 megajoules per kilogram and coal roughly 24, while a lithium-ion battery manages under 1, which is the central difficulty with electric flight. Food energy is the same quantity, which is why kilocalories per kilogram appear here too.
Conversion table — 1 unit in joule/kilogram
| Unit | Joule/kilogram |
|---|---|
| Joule/kilogram | 1 |
| Kilojoule/kilogram | 1000 |
| Megajoule/kilogram | 1000000 |
| Calorie/gram | 4184 |
| Kilocalorie/kilogram | 4184 |
| BTU/pound | 2326 |
Fuel Efficiency — Mass conversions — frequently asked
- What is 1 Joule/kilogram in kilojoule/kilogram?
- 1 Joule/kilogram = 0.001 kilojoule/kilogram.
- What is 1 Joule/kilogram in megajoule/kilogram?
- 1 Joule/kilogram = 0.000001 megajoule/kilogram.
- What is 1 Joule/kilogram in calorie/gram?
- 1 Joule/kilogram = 0.000239006 calorie/gram.
- What is 1 Joule/kilogram in kilocalorie/kilogram?
- 1 Joule/kilogram = 0.000239006 kilocalorie/kilogram.
- What is 1 Joule/kilogram in btu/pound?
- 1 Joule/kilogram = 0.000429923 btu/pound.
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About Unit Converter
A unit converter changes a measurement from one unit to another. Pick a category — length, weight, temperature, data, area, speed, and 75+ more, including engineering and scientific units like pressure, torque, and viscosity — enter a value, and get an accurate conversion instantly. It runs in your browser with no sign-up and nothing to install.
Frequently asked questions
- How many unit categories are supported?
- Over 75, from everyday units (length, mass, temperature, volume, area, speed, data storage) to technical and scientific ones (energy, pressure, torque, viscosity, molar concentration, luminance, and more).
- Does it convert engineering and scientific units?
- Yes. Alongside common units it covers engineering and scientific categories — force, pressure, torque, thermal, flow, radiology, and CSS/typography units — with precise conversion factors.
- Are the conversions accurate?
- Yes. Conversions use standard factors and precise formulas, including non-linear ones like temperature, so results are exact.
- Do I need to install an app?
- No download needed — it's a free web app that runs in any modern browser on phone, tablet, or desktop, with nothing to install and nothing sent anywhere.
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