| Material | By Volume | By Mass | |||||
| Diesel Fuel | 10,700 Wh/L | 12,700 Wh/kg | 45.7 kJ/g | 10.9 Cal/g | |||
| Heating Oil | 10,400 Wh/L | 12,800 Wh/kg | 46.1 kJ/g | 11.0 Cal/g | |||
| Gasoline | 9,700 Wh/L | 12,200 Wh/kg | 43.9 kJ/g | 10.5 Cal/g | |||
| Butane | 7,800 Wh/L | 13,600 Wh/kg | 48.6 kJ/g | 11.6 Cal/g | |||
| LNG (-160°C) | 7,216 Wh/L | 12,100 Wh/kg | 43.6 kJ/g | 10.4 Cal/g | |||
| Propane | 6,600 Wh/L | 13,900 Wh/kg | 50.0 kJ/g | 12.0 Cal/g | |||
| Ethanol | 6,100 Wh/L | 7,850 Wh/kg | 26.3 kJ/g | 6.8 Cal/g | |||
| Methanol | 4,600 Wh/L | 6,400 Wh/kg | 23.0 kJ/g | 5.5 Cal/g | |||
| NG | 3,100 Wh/L | 12,100 Wh/kg | 43.6 kJ/g | 10.4 Cal/g | |||
| Liquid Hydrogen | 2,600 Wh/L | 39,000 Wh/kg | 140.4 kJ/g | 33.6 Cal/g | |||
| 150 Bar Hydrogen | 405 Wh/L | 39,000 Wh/kg | 140.4 kJ/g | 33.6 Cal/g | |||
| NiMH Battery | 280 Wh/L | 100 Wh/kg | 0.4 kJ/g | 0.1 Cal/g | |||
| Li-Ion Battery | 200 Wh/L | 150 Wh/kg | 0.5 kJ/g | 0.1 Cal/g | |||
| Lead-Acid Battery | 40 Wh/L | 25 Wh/kg | 0.1 kJ/g | 0.0 Cal/g | |||
| STP Propane | 26 Wh/L | 13,900 Wh/kg | 50.0 kJ/g | 12.0 Cal/g | |||
| STP NG | 11 Wh/L | 12,100 Wh/kg | 43.6 kJ/g | 10.4 Cal/g | |||
| STP Hydrogen | 3 Wh/L | 39,000 Wh/kg | 140.4 kJ/g | 33.6 Cal/g | |||
| Fat | 11,000 Wh/kg | 39 kJ/g | 9 Cal/g | ||||
| Protein | 4,800 Wh/kg | 17 kJ/g | 4 Cal/g | ||||
| Carbohydrate | 4,800 Wh/kg | 17 kJ/g | 4 Cal/g |