Reactor Volume Estimator
This Reactor Volume Estimator calculates the required reactor volume for both batch reactors and continuous reactors (CSTR/PFR approximation) using reaction time, flow rate, and conversion. Ideal for chemical engineers, process designers, and students needing fast, reliable sizing during preliminary design.
Batch & Continuous Reactor Sizing Tool
Select Batch or Continuous reactor.
Enter reaction time in hours.
Enter conversion (0–1) for target product yield.
If using continuous mode, enter flow rate in m³/hr.
Click Calculate to get the estimated reactor volume.
🧭 How to Use
FAQ
Q1. Does this calculator differentiate CSTR vs PFR?
A. It provides a preliminary estimate using simple residence-time relationships. Detailed design requires reaction kinetics.
Q2. What conversion value should I use?
A. Use fractional value (e.g., 0.75). Higher conversion increases required reactor volume.
Q3. Is density or reaction order needed?
A. Not for this volume estimate. Kinetic parameters are part of advanced detailed calculations.
Q4. Can I use this for gas-phase reactors?
A. Yes — but final sizing must include compressibility and temperature effects.