The Specific Heat Capacity Calculator determines the specific heat (c) of a substance using the formula c = q / (m × ΔT), where q is the heat energy absorbed or released, m is the mass, and ΔT is the temperature change. It supports unit conversions between joules (J) and kilojoules (kJ) for energy, as well as grams (g) and kilograms (kg) for mass, providing results in J/g·K.