Heat of Fusion Calculator Formula
Understand the math behind the heat of fusion calculator. Each variable explained with a worked example.
Formulas Used
Heat Energy Required
heat = mass * latent_heatHeat Energy (kJ)
heat_kj = mass * latent_heat / 1000Variables
| Variable | Description | Default |
|---|---|---|
mass | Mass(kg) | 1 |
latent_heat | Latent Heat of Fusion(J/kg) | 334000 |
How It Works
Heat of Fusion
The heat of fusion is the energy absorbed during melting at constant temperature.
Formula
Q = m * L_f
where L_f is the specific latent heat of fusion. For water/ice, L_f = 334,000 J/kg = 334 kJ/kg.
Worked Example
Melting 1 kg of ice at 0°C.
mass = 1latent_heat = 334000
- 01Q = m * Lf
- 02Q = 1 * 334000
- 03Q = 334,000 J = 334 kJ
Ready to run the numbers?
Open Heat of Fusion Calculator