Helmholtz Free Energy

Calculate Helmholtz Free Energy instantly with the exact formula and a worked example.

Helmholtz Free Energy

ΔU, kJ/mol
T, K
ΔS, J/(mol·K)
ΔF
-114.9kJ/mol
Calculate Helmholtz Free Energy instantly with the exact formula and a worked example.

More about: Helmholtz Free Energy

What it calculates

The “Helmholtz Free Energy” calculator computes ΔF in kJ/mol from 3 parameters: δu, kj/mol, t, k, δs, j/(mol·k).

A standard physics formula used in educational and engineering tasks.

Example calculation

With parameters ΔU, kJ/mol = -100, T, K = 298, ΔS, J/(mol·K) = 50 the result is -114.9 kJ/mol.

How to use

  1. Enter δu, kj/mol, t, k and δs, j/(mol·k) — each field above is adjustable with a slider.
  2. ΔF (kJ/mol) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is Helmholtz Free Energy calculated?
The Helmholtz Free Energy calculator computes ΔF (in kJ/mol) from δu, kj/mol, t, k, δs, j/(mol·k). Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Helmholtz Free Energy calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.

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