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Activation Energy (Arrhenius)

Calculate Activation Energy (Arrhenius) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

Activation Energy (Arrhenius)

k₁
k₂
T₁K
T₂K
Eₐ
40,202J/mol
ln(k₂/k₁) = -Eₐ/R · (1/T₁ − 1/T₂)Calculate Activation Energy (Arrhenius) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

More about: Activation Energy (Arrhenius)

What it calculates

The “Activation Energy (Arrhenius)” calculator computes Eₐ in J/mol from 4 parameters: k₁, k₂, t₁ (K), t₂ (K).

A standard physics formula used in educational and engineering tasks.

Example calculation

With parameters k₁ = 0.001, k₂ = 0.01, T₁ = 300 K, T₂ = 350 K the result is 40,202 J/mol (ln(k₂/k₁) = -Eₐ/R · (1/T₁ − 1/T₂)).

How to use

  1. Enter the parameter values — every field above is adjustable with a slider.
  2. The result and related metrics are calculated automatically as you type.
  3. Use the additional metrics shown (if any) where needed.
  4. Copy the result or bookmark the page.

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