Chemical Engineering Calculators
Last updated: October 2026
Pipeline Pressure Drop Calculator
Calculate frictional pressure drop in pipelines using the Darcy-Weisbach equation.
Pump Power Calculator
Calculate the shaft power and motor input power needed to pump a fluid against a given head.
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.
Vapor Pressure Calculator (Antoine Equation)
Calculate the vapor pressure of common chemicals at a given temperature using the Antoine equation and built-in constants for water, benzene, toluene, and ethanol.
Compressibility Factor Calculator
Estimate the compressibility factor Z of a real gas using reduced pressure, reduced temperature, and the acentric factor.
Multiple Effect Evaporator Calculator
Calculates the steam consumption per effect and total water evaporated in a multiple-effect evaporator system.
LMTD Heat Exchanger Calculator
Calculate the log mean temperature difference (LMTD) of a counter-flow or parallel-flow heat exchanger from the inlet and outlet temperatures of both fluids.
Fenske Equation Calculator
Compute the minimum number of theoretical equilibrium stages required for a binary distillation separation using the Fenske equation.
Sherwood Number Calculator
Compute the Sherwood number to quantify convective mass transfer relative to molecular diffusion.
Bubble Point Pressure Calculator
Calculate the bubble point pressure of a binary liquid mixture using Raoult's Law.
Gas Compressibility Factor Calculator
Calculate the real-gas compressibility factor Z from reduced temperature and pressure using the Pitzer correlation.
Centrifugal Pump Sizing and Power Calculator
Determine the brake horsepower required to drive a centrifugal pump given flow rate, total head, and fluid properties.
Crystallizer Yield Calculator
Estimates the mass of crystals obtained from a cooling crystallization process given initial concentration, temperature drop, and solubility data.
Mass Transfer Coefficient Calculator
Compute the convective mass transfer coefficient k from Reynolds- and Schmidt-number correlations for turbulent pipe flow, a flat plate, or a single sphere (droplet, bubble or particle).
Absorption Column Height Calculator
Determine the required packed bed height for a gas absorption column using mass transfer coefficients and equilibrium data.
Crystallization Yield Calculator
Estimate the mass of crystals recovered when a solution is cooled or partly evaporated, from its starting concentration, final solubility, batch mass, water evaporated and recovery efficiency.
Distillation Column Theoretical Plates Calculator
Estimates the minimum number of theoretical plates needed to separate a binary mixture by distillation.
Centrifugal Pump Power and NPSH Calculator
Size a centrifugal pump: calculate the shaft power for a flow rate, head and efficiency, or the net positive suction head available (NPSHa) to check against cavitation.
Adsorption Isotherm Calculator
Compute equilibrium adsorption capacity using Langmuir or Freundlich isotherm models.
CSTR Reactor Design Calculator
Calculates the residence time and required reactor volume for a Continuous Stirred Tank Reactor (CSTR) given reaction order, flow rate, and conversion.
Evaporator Steam Economy Calculator
Estimate the live steam a multi-effect evaporator needs, using a practical steam economy of about 0.85 kg water per kg steam per effect.
Cooling Tower Performance Calculator
Evaluate a cooling tower's thermal effectiveness by comparing its actual temperature reduction to the maximum thermodynamically possible.
Fluidized Bed Minimum Velocity Calculator
Determines the minimum fluidization velocity for particles in a fluid bed reactor.