The units of measurement for sensible, latent, and total heat are typically measured in joules (J) or British thermal units (BTU). The specific heat capacity of a substance is typically measured in joules per kilogram per kelvin (J/kg·K) or BTU per pound per degree Fahrenheit (BTU/lb·°F). The latent heat of vaporization or fusion is typically measured in joules per kilogram (J/kg) or BTU per pound (BTU/lb).