Reaction Rate Calculator

What Is a Reaction Rate Calculator?

Reaction rate measures how quickly reactants are consumed or products form during a chemical reaction. This calculator finds the average rate from the change in concentration of a species over a time interval.

How to Use This Reaction Rate Calculator

1. Enter the initial concentration of the species you're tracking.
2. Enter its final concentration after the reaction has progressed.
3. Enter the time elapsed, in seconds.
4. Click Calculate to get the average reaction rate.

Formula

• Average Rate = |Final Concentration − Initial Concentration| / Time

Worked Example

A reactant's concentration drops from 0.80 M to 0.65 M over 30 seconds. Rate = |0.65 − 0.80| / 30 ≈ 0.005 M/s.