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Convert Calorie (thermodynamic) (cal) to British Thermal Unit (BTU) instantly with live mathematical scaling and high-precision energy tables.

Calorie (thermodynamic) (cal): The amount of heat required to raise the temperature of one gram of water by one degree Celsius.
British Thermal Unit (BTU): A traditional unit of heat, defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.