basic

Reaction Rate from Concentration Change Calculator

Average rate r = −Δ[A] / Δt for a single species.

Compute the average reaction rate from the change in concentration of a reactant (or product) over a time interval: r = −Δ[A] / Δt for a reactant; r = +Δ[P] / Δt for a product.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mol/L
mol/L
s

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

r = (C_initial − C_final) / Δt (positive for a consumed reactant).

In depth

Compute the average reaction rate from the change in concentration of a reactant (or product) over a time interval: r = −Δ[A] / Δt for a reactant; r = +Δ[P] / Δt for a product.