Arrhenius Equation Calculator

Find a rate constant from activation energy and temperature.

Rate constant (k) (1/s) 1.72

Formula: k = A·e^(−Ea ÷ RT), R = 8.314

Step-by-step with your numbers:

1. Values used:

2. Pre-exponential factor (A) = 1,000,000,000 1/s

3. Activation energy = 50,000 J/mol

4. Temperature = 298 K

6. Rate constant (k) = 1.721/s

Did we solve your problem today?

The Arrhenius equation links reaction rate to temperature and activation energy.

The math behind it

k = A × e^(−Ea ÷ RT), with R = 8.314 J·mol⁻¹·K⁻¹.

A 10⁹, Ea 50 kJ/mol, 298 K → ~1.7 /s.

Higher temperature?

Increases k exponentially — reactions speed up with heat.