❄️ Latent Heat Calculator
Calculate the amount of energy needed to melt, freeze, boil, or condense a given mass of a substance using its specific latent heat.
What This Calculator Does
Latent heat is the energy absorbed or released during a phase change (like melting, freezing, boiling, or condensing) without a change in temperature. This calculator finds the total energy involved for a given mass of substance.
The Formula
The formula is simply Q = m × L, where m is mass in kilograms and L is the specific latent heat of the substance in kJ/kg. Water’s specific latent heat of fusion (melting/freezing) is about 334 kJ/kg, and its specific latent heat of vaporization (boiling/condensing) is about 2260 kJ/kg at standard atmospheric pressure.
Note: For substances other than water, use the custom option and enter the correct specific latent heat value for that material and phase change, since these vary widely between substances.