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    Specific Heat Converter (kJ/kg·K, BTU/lb·°F)

    Specific Heat Converter (kJ/kg·K, BTU/lb·°F): convert between 6 specific heat capacity units, for example 1 BTU/(lb·°F) = 4.1868 kJ/(kg·K).

    From unit
    To unit

    1 BTU/(lb·°F) = 4.1868 kJ/(kg·K)

    Convert specific heat capacity between J/(kg·K), kJ/(kg·K), J/(g·K), cal/(g·°C), kcal/(kg·°C) and BTU/(lb·°F). 1 BTU/(lb·°F) = 1 kcal/(kg·°C) = 1 cal/(g·°C) = 4.1868 kJ/(kg·K) exactly (International Table units).

    Typical values

    Water 4.18 kJ/(kg·K), ice 2.1, steam about 2.0, air 1.005 (cp), concrete 0.88, aluminium 0.90, steel 0.46–0.49, copper 0.385. A kelvin step equals a degree Celsius step, so J/(kg·K) and J/(kg·°C) are the same.

    Specific Heat Capacity unit definitions

    joule per kilogram kelvin (J/(kg·K))
    The joule per kilogram kelvin is the SI unit of specific heat capacity: the heat needed to warm one kilogram by one kelvin. Water is 4186 J/(kg·K), air 1005, aluminium 900 and steel about 490.
    kilojoule per kilogram kelvin (kJ/(kg·K))
    Kilojoules per kilogram kelvin are the working unit of thermodynamics tables and GATE questions: cp of air 1.005 kJ/(kg·K), water 4.187, steam about 2.0.
    calorie per gram degree Celsius (cal/(g·°C))
    Calories per gram degree Celsius come from the definition of the calorie: water has a specific heat of 1 cal/(g·°C). Using the International Table calorie this is 4.1868 kJ/(kg·K). Reference: International Table calorie (4.1868 J).
    BTU per pound degree Fahrenheit (BTU/(lb·°F))
    BTU per pound degree Fahrenheit is the US specific heat unit. By the definitions of the BTU and the International Table calorie, 1 BTU/(lb·°F) = 1 kcal/(kg·°C) = 4.1868 kJ/(kg·K): water is 1, air 0.24, steel 0.12.
    joule per gram kelvin (J/(g·K))
    Joules per gram kelvin (or per gram degree Celsius) are the chemistry-class unit of specific heat: water is 4.18 J/(g·°C). The number equals kJ/(kg·K).
    kilocalorie per kilogram degree Celsius (kcal/(kg·°C))
    Kilocalories per kilogram degree Celsius are the MKS heat unit still found in Indian process-industry and refrigeration texts; numerically the same as cal/(g·°C) and BTU/(lb·°F). Reference: International Table calorie (4.1868 J).

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    Sources

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