Energy Unit Converter

SI unit of energy equal to one watt-second or one newton-meter. Fundamental to all energy calculations.

Common metric energy unit used in thermodynamics, HVAC, and international energy specifications.

Used for fuel energy content, large thermal loads, and energy auditing.

Used for building energy consumption, natural gas billing, and large-scale energy analysis.

Thermochemical calorie. Energy required to raise 1 gram of water by 1°C. Used in chemistry and nutrition.

Also known as a food Calorie (capital C). Used in nutrition and some chemical engineering contexts.

Standard US thermal energy unit. Essential for HVAC, heating, and natural gas calculations.

Standard unit for electrical energy billing and consumption. 1 kWh = 3.6 MJ.

Used for large-scale electrical energy production, utility billing, and power plant output.

US customary unit of mechanical energy or work. Used in structural and mechanical engineering.

Equal to 100,000 BTU. Standard unit for natural gas billing in the United States.

Energy gained by an electron through 1 volt potential difference. Used in physics and semiconductor engineering.

Used in X-ray spectroscopy, nuclear physics, and radiation engineering.

Used in nuclear engineering, particle physics, and radiation shielding design.

CGS unit of energy. 1 erg = 1 dyne-centimeter = 10⁻⁷ joules. Used in some scientific applications.