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Heat conduction through a slab
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Calculators / Science / Latent heat
Latent heat calculator
Calculate the energy magnitude for a phase change at constant temperature.
On this page
Phase-change energy magnitude668,000J
Phase-change energy magnitude668kJ
Calculator controls
How to calculate
Calculate the energy magnitude for a phase change at constant temperature.
Phase-change energy magnitude = m*l J; Phase-change energy magnitude = m*l/1000 kJ
Worked example
Mass (kg): 2; Specific latent heat (J/kg): 334000.
Phase-change energy magnitude: 668,000 J; Phase-change energy magnitude: 668 kJ.
Assumptions and limits
Specific latent heat depends on substance, pressure and phase change. The output is a magnitude; heating and cooling before or after the transition are excluded.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Calculate the energy magnitude for a phase change at constant temperature.
When this tool is useful
Phase-change energy magnitude = m*l J; Phase-change energy magnitude = m*l/1000 kJ
Understanding your inputs
| Input | What to enter |
|---|---|
| Mass (kg) | Enter a number of at least 0 and no more than 1000000000000. |
| Specific latent heat (J/kg) | Enter a number of at least 1e-12 and no more than 1000000000000. |
Frequently asked questions
What assumptions does this calculation use?
Specific latent heat depends on substance, pressure and phase change. The output is a magnitude; heating and cooling before or after the transition are excluded.
How is the result calculated?
Phase-change energy magnitude = m*l J; Phase-change energy magnitude = m*l/1000 kJ