ChemProCal
Knowledge Base + New Calculation Login Sign Up
CHEMPROCAL ENGINEERING PLATFORM

Calculate. Understand. Apply.

A professional engineering workspace for Chemical, Oil & Gas, Refining, Petrochemical, LNG and Process Industries.

START HERE

What do you want to do?

Gas Processing Compressor PSV Pipe Sizing Heat Exchanger Thermodynamics
LEARN → APPLY

Engineering Fundamentals

Open a concept, understand the theory, then jump directly into the related calculation.

Explore →
What do you need to do?

Analyze Fluid Flow

Pressure drop, pumps, valves and restrictions.

Explore →

Analyze Thermodynamics

Explore EOS, steam, flash calculations and compressor work.

Explore →

Analyze Gas

Calculate gas properties, compressibility and flow.

Explore →

Size Equipment

Evaluate separators, heat exchangers, cooling towers and other equipment.

Explore →

Size a Pipe

Calculate liquid, gas and two-phase line sizing.

Explore →

Find Properties

Search chemical and thermodynamic properties.

Explore →
Browse Tools By Category

Heat Transfer

Equipment Design

Thermodynamics

Control Valve

Utilities

Instrument Design

Data & Properties

Fluid Mechanics

Browse Knowledge By category

Thermodynamics

Heat Transfer

Fluid Mechanics

Equipment Design


How ChemProCal works
1. Find Tool
→
2. Enter Inputs
→
3. Calculate
→
4. Review Outputs
→
5. Check
→
6. Read Theory
→
7. Apply / Report
Don't Just Calculate. Understand the Result.

CALCULATE

Engineering calculators built around practical engineering calculations.

Example: Control Valve Sizing — Gas
↑↓

UNDERSTAND

Engineering Fundamentals explain the principles, equations, assumptions and methods behind calculations.

Example: Control Valve Sizing for Gases
Fundamentals
P₁ P₂ Cv ΔP

Control Valve Sizing for Liquids (ISA 75.01)

Understand liquid Cv calculations, cavitation, and flashing in control valves.

Engineering Theory

Control Valve Sizing for Gases

Learn about the ISA equations for gas control valves, expansion factors, and choked flow phenomena.

ChemProCal – Chemical Engineering Calculators & Process Design Tools

ChemProCal is a comprehensive, cloud-based suite of chemical engineering calculators and process design tools built specifically for process engineers, mechanical engineers, and engineering students. Our platform bridges the gap between complex theoretical thermodynamics and practical, day-to-day equipment design, helping engineers move away from error-prone spreadsheets toward verified and automated calculation engines.

Our expanding library of engineering utilities covers a wide range of chemical and process engineering applications. Whether you are performing preliminary sizing calculations for flash drums, horizontal separators, KO drums, gas scrubbers, analyzing two-phase fluid mechanics, or estimating the required power for centrifugal compressors, ChemProCal provides fast calculations based on established engineering principles.


Built for Accuracy and Engineering Efficiency

Every ChemProCal tool is designed around engineering equations and calculation methodologies relevant to real-world process design. From our Psychrometric Analyzer to our Gas Scrubber Sizing utility, the platform combines engineering calculations with practical validation features.

We understand that accuracy and consistency are critical in process engineering. That is why ChemProCal incorporates features such as:

  • Engineering-based calculation methodologies
  • Built-in chemical property data and lookup capabilities
  • Automatic unit conversion
  • Input validation and engineering limit checks
  • Clear calculation results and intermediate parameters
  • Consistent calculation workflows across different engineering tools
  • Transparent equations and calculation methodology

From Engineering Theory to Practical Design

ChemProCal is more than a collection of calculators. It is designed to connect engineering theory with practical application.

Our Fundamentals Knowledge Base provides detailed explanations of the engineering concepts, equations, assumptions, and calculation logic behind many of our tools. This allows students and early-career engineers to understand not only what a calculation produces, but also why the calculation works.

Experienced engineers can also use the calculation methodology and intermediate results to review assumptions, understand the basis of preliminary calculations, and develop a stronger engineering understanding of the tools they use.

⚙️ Engineering Calculators

Perform common process, fluid-flow, thermodynamics, equipment-sizing, and mechanical engineering calculations directly in your browser.

📐 Process Design Tools

Support preliminary engineering calculations for separators, piping systems, compressors, pumps, heat exchangers, and other process equipment.

📚 Engineering Fundamentals

Learn the theory, equations, assumptions, and engineering principles behind the calculations through our growing knowledge base.

🔄 Fast & Consistent Calculations

Reduce repetitive spreadsheet work with automated calculations, standardized units, validation checks, and clearly presented engineering results.


Designed for Engineers and Students

ChemProCal is built for a broad engineering audience, including process engineers, chemical engineers, mechanical engineers, plant engineers, design engineers, engineering consultants, and students.

Whether you are checking a preliminary design, studying a process engineering concept, developing a calculation basis, or simply looking for a faster way to perform a repetitive engineering calculation, ChemProCal aims to provide a practical and accessible engineering workspace.

Explore ChemProCal

Start exploring our growing collection of chemical engineering calculators, process design tools, and engineering resources. Use the calculators to perform practical engineering calculations, and explore the Fundamentals Knowledge Base to understand the theory and methodology behind them.

Explore the tools. Understand the engineering. Calculate with confidence.