🧪Chemical Engineering Calculators

Reynolds number, pressure drop, pump power. 11 free tools — transparent formulas and quick results.

Reynolds Number

Darcy-Weisbach Pressure Drop

McCabe-Thiele Distillation

CSTR / PFR Reactor Design

Binary Phase Diagram

Flash Drum / VLE (Rachford-Rice)

Fluidised Bed Min. Velocity (Ergun)

Batch Reactor Sizing

Antoine Vapour Pressure

Mixing Tank Power (Impeller)