Gibbs Free Energy (ΔG)
Calculate Gibbs Free Energy (ΔG) instantly with the exact formula and a worked example.
Gibbs Free Energy (ΔG)
ΔHkJ/mol
TK
ΔSJ/(mol·K)
ΔG = ΔH − T·ΔS
-529.8kJ/mol
More about: Gibbs Free Energy (ΔG)
What it calculates
The “Gibbs Free Energy (ΔG)” calculator computes ΔG = ΔH − T·ΔS in kJ/mol from 3 parameters: δh (kJ/mol), t (K), δs (J/(mol·K)).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters ΔH = -500 kJ/mol, T = 298 K, ΔS = 100 J/(mol·K) the result is -529.8 kJ/mol (ΔG < 0 — spontaneous.).
How to use
- Enter δh, t and δs — each field above is adjustable with a slider.
- ΔG = ΔH − T·ΔS (kJ/mol) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
Related calculators
FAQ
How is Gibbs Free Energy (ΔG) calculated?
The Gibbs Free Energy (ΔG) calculator computes ΔG = ΔH − T·ΔS (in kJ/mol) from δh, t, δs. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Gibbs Free Energy (ΔG) calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
More calculators in this category
Explore related free tools