basic

Latent Heat of Fusion Energy Calculator

Q = m · L_f — heat to melt mass m at the melting point.

Compute the energy Q required to melt a substance at its melting point from the mass and the substance-specific latent heat of fusion L_f: Q = m · L_f. Default L_f = 334 000 J/kg (water → ice). Reports the result in joules and kilojoules.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

kg
J/kg

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Q = m · L_f

In depth

Compute the energy Q required to melt a substance at its melting point from the mass and the substance-specific latent heat of fusion L_f: Q = m · L_f. Default L_f = 334 000 J/kg (water → ice). Reports the result in joules and kilojoules.