Gibbs Free Energy Calculator

Calculate Gibbs Free Energy (ΔG), enthalpy (ΔH), entropy (ΔS), or temperature using ΔG = ΔH - TΔS

Find *

Units

Temperature Unit

Enthalpy Change (ΔH) *

ΔH in kJ/mol (negative = exothermic)

Entropy Change (ΔS) *

ΔS in kJ/(mol·K)

Temperature (T) *

Temperature in Kelvin (K = °C + 273.15)

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Show Spontaneity

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Gibbs Free Energy Result

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Thermodynamic Visualization

Visual representation of ΔG = ΔH - TΔS

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Step-by-step Gibbs Free Energy calculation

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ΔG

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Gibbs Free Energy

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ΔH

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Enthalpy Change

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ΔS

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Entropy Change

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Temperature

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Based on Gibbs Free Energy

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Key formulas and relationships

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Understanding Gibbs Free Energy

📊 Thermodynamic Disclaimer: This calculator assumes standard conditions and ideal behavior. Results are for educational purposes.