Convert British thermal unit to Kilocalorie

One BTU equals 0.252165392 kcal. This converter allows you to easily convert between British thermal unit and Kilocalorie in real time.

Formula

BTU × 0.252165392 = kcal

Example: 1 BTU = 0.252165392 kcal

What is British thermal unit?

The British thermal unit is the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit. It is primarily used in the American HVAC industry, where air conditioner capacity is rated in BTU per hour (12,000 BTU/h equals one ton of refrigeration). Residential air conditioners typically range from 5,000 to 25,000 BTU/h. Natural gas is also traded in BTU, with one cubic foot containing about 1,000 BTU. One BTU equals approximately 1,055 joules.

What is Kilocalorie?

The kilocalorie equals 1,000 thermochemical calories and is the standard unit for food energy labeling in Japan, the United States, and many other countries. It is often written as "Cal" (with a capital C) or simply called a "Calorie" on food packages. A bowl of rice (150 grams) contains about 235 kcal, a slice of bread about 160 kcal, and 30 minutes of walking burns roughly 100 kcal.