0.0039656512

converter.headingConverter

converter.formula

converter.formulaText
converter.reverseFormulaText

undefined → undefined

1 0.0039656512
5 0.0198282562
10 0.0396565124
50 0.1982825621
100 0.3965651243
500 1.9828256213
1000 3.9656512426

converter.aboutUnit

The calorie (cal) is a small energy unit defined as the amount of heat needed to raise one gram of water by one degree Celsius, primarily used in physics and chemistry. In everyday language, 'calorie' usually refers to the kilocalorie (kcal), but the true calorie is 1/1,000th of that amount. One calorie equals exactly 4.184 joules, providing a direct bridge between thermal and mechanical energy.

💡 A calorie is about the energy to heat 1 gram of water by 1°C

converter.aboutUnit

The BTU (British Thermal Unit) equals approximately 1,055.06 joules, defined as the heat needed to raise one pound of water by one degree Fahrenheit. It is the primary unit for rating heating and cooling equipment in the United States, appearing on air conditioner specifications, furnace ratings, and energy efficiency labels. One BTU equals about 0.2931 watt-hours or roughly 0.252 kilocalories.

💡 1 BTU is about the energy to heat 1 pound of water by 1°F

converter.faqTitle

converter.whatIsUnit in undefined?

1 = 0.0039656512 . converter.formula: 1 = 0.0039656512 .

How many undefined in 1 undefined?

1 undefined = 0.0039656512 undefined. Use the converter above to calculate other values.

converter.whatIsUnit

The calorie (cal) is a small energy unit defined as the amount of heat needed to raise one gram of water by one degree Celsius, primarily used in physics and chemistry. In everyday language, 'calorie' usually refers to the kilocalorie (kcal), but the true calorie is 1/1,000th of that amount. One calorie equals exactly 4.184 joules, providing a direct bridge between thermal and mechanical energy.

converter.whatIsUnit

The BTU (British Thermal Unit) equals approximately 1,055.06 joules, defined as the heat needed to raise one pound of water by one degree Fahrenheit. It is the primary unit for rating heating and cooling equipment in the United States, appearing on air conditioner specifications, furnace ratings, and energy efficiency labels. One BTU equals about 0.2931 watt-hours or roughly 0.252 kilocalories.

EN · 中文 · ES · FR · DE