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Chemical Reactor Residence Time Calculator

Calculate the exit concentration and conversion for a CSTR or PFR reactor with first-order kinetics given reactor volume, flow rate, and rate constant. Used by chemical engineers to size reactors and predict performance during process design.

Volumetric Flow Rate (m³/h)

Reactor Volume (m³)

Rate Constant (h⁻¹)

Initial Concentration (mol/L)

Reactor Type

Fill in the required fields to see your result.

Chemical Engineering

Chemical Reactor Conversion Calculator

Calculate the required volume of a continuous stirred-tank reactor (CSTR) to achieve a target conversion for first- or second-order reactions. Essential for chemical process design and scale-up.

Initial Reactant Concentration (mol/L)

Reaction Rate Constant (L/mol·s)

Volumetric Flow Rate (L/min)

Desired Conversion (%)

Reaction Order

Fill in the required fields to see your result.

Key differences

	Chemical Reactor Residence Time Calculator	Chemical Reactor Conversion Calculator
Category	Chemical Engineering	Chemical Engineering
Inputs required	5	5
Result	Residence Time (hours)	Required Reactor Volume (L)
What it does	Calculate the exit concentration and conversion for a CSTR or PFR reactor with first-order kinetics given reactor volume, flow rate, and rate constant. Used by chemical engineers to size reactors and predict performance during process design.	Calculate the required volume of a continuous stirred-tank reactor (CSTR) to achieve a target conversion for first- or second-order reactions. Essential for chemical process design and scale-up.