Formula
This calculator uses the equation below. Use it as a quick reference when checking setup before solving.
delta_G = delta_H - T * delta_SPhysical Chemistry
Gibbs Free Energy Calculator
Solve one variable in delta_G = delta_H - T * delta_S for thermodynamic spontaneity relationships.
delta_G = delta_H - T * delta_S
Run this calculator
Leave a nullable field blank to solve for it.
Variable glossary
Delta G (delta_g)
Gibbs free energy change (J/mol). Set to null to solve.
Delta H (delta_h)
Enthalpy change (J/mol). Set to null to solve.
Temperature (temperature)
Temperature in kelvin (K). Set to null to solve.
Delta S (delta_s)
Entropy change (J/(mol*K)). Set to null to solve.
Frequently Asked Questions
What does the Gibbs Free Energy calculator solve?
It solves Gibbs Free Energy problems in physical chemistry using your provided inputs and computes unknown values when nullable fields are left blank.
Do I need to convert units before using this tool?
Use the unit toggles where available (for example K/C and L/mL). ChemGenius converts values to the calculator's base units automatically before solving.
Can I save this result in my workflow?
Yes. After computing a result, you can continue into ChemGenius workflows like protocol drafting or notes to keep your calculation context attached to downstream work.