| Energy Equivalents |
| 1 calorie (the amount of energy required to raise the temperature of 1 gram of water by 1°C) |
| = 0.001 Calories (the food energy unit) |
| = 4.19 Joules (the SI unit of energy) |
| = 4.19 ´ 107 ergs (a smaller metric unit of energy than the Joule) |
| = 3.09 foot-pounds (the British unit of energy) |
| = 0.00397 Btu (British thermal units) |
| = 3.97 ´ 10-8 therms (Questar uses this unit to measure the energy content of your natural gas) |
| = 1.164 ´ 10-6 kw-hrs (the power company uses this unit to measure your electrical energy usage) |
In Ph 137 the unit we will most often use will be the calorie.