ΔG = ΔH − T·ΔS

Calculate ΔG = ΔH − T·ΔS instantly with the exact formula and a worked example. Free online calculator — no signup.

ΔHkJ/mol

ΔSJ/(mol·K)

ΔG = ΔH − T·ΔS

-529.8kJ/mol

ΔG < 0 — spontaneous.Calculate ΔG = ΔH − T·ΔS instantly with the exact formula and a worked example. Free online calculator — no signup.

A physics calculator based on a standard formula. Enter the parameters to compute the result instantly — for coursework, labs, and engineering tasks.

The calculator computes ΔG = ΔH − T·ΔS (kJ/mol) from parameters:

Example 1

ΔH = -500 kJ/mol, T = 298 K, ΔS = 100 J/(mol·K)

→ ΔG = ΔH − T·ΔS: -529.8 kJ/mol

Example 2 (×1.5)

ΔH = -750 kJ/mol, T = 447 K, ΔS = 150 J/(mol·K)

→ ΔG = ΔH − T·ΔS: -817.05 kJ/mol

More about: ΔG = ΔH − T·ΔS

The “ΔG = ΔH − T·ΔS” 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.

With parameters ΔH = -500 kJ/mol, T = 298 K, ΔS = 100 J/(mol·K) the result is -529.8 kJ/mol (ΔG < 0 — spontaneous.).