Calculate the energy required for Phase Change of a substance.
Substance & Mass
Energy Results
Enter mass to calculate energy
About this calculator
Quick Reference
QHeat energy (Joules)
mMass (kg)
LSpecific latent heat (J/kg)
Water L_f334,000 J/kg
Water L_v2,260,000 J/kg
Overview
Latent heat is the energy absorbed or released by a substance during a change in its physical state (phase) that occurs without a change in temperature. Common examples include melting ice or boiling water.
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Pro Tips
Latent heat of fusion applies to melting/freezing.
Latent heat of vaporization applies to boiling/condensing.
Energy is calculated using Q = m * L.
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Fun Facts
"Wait, did you know that it takes more energy to turn 100°C water into steam than it does to heat 0°C water all the way to 100°C? Water is amazing!"
"Dogs cool down through evaporation (panting) because the latent heat of vaporization of water carries away body heat."
"The term 'latent' comes from the Latin word 'latere', which means 'to lie hidden', because the temperature doesn't change during the process."
