Chemical & Process Tools

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Jan 12, 2026

Liquid Mixture Density Calculator

Calculate the final density and specific gravity of liquid mixtures. Easily blend multiple fluids by volume to determine total mass and composite properties.

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Chemical & Process Tools PAGES

Jan 12, 2026

Flare Sweep Gas Calculator | Header Velocity & Purge Flow

Calculate continuous sweep gas flow rates for flare headers. Ensure minimum velocity to prevent air ingress and stagnation using ideal gas law and pipe geometry

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Chemical & Process Tools PAGES

Jan 12, 2026

Viscosity Blending Calculator | Refutas Method (ASTM D7152)

Blend oil and fluid viscosities accurately using the ASTM D7152 Refutas method. Calculate final kinematic viscosity (cSt) and Viscosity Blending Number (VBN).

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Jan 12, 2026

API 2000 Tank Venting Calculator

Calculate storage tank venting requirements per API 2000 (7th Ed). Determine normal in/out-breathing and emergency fire case relief loads (Nm³/h & SCFH).

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Jan 12, 2026

Cooling Tower Calculator

Optimize cooling tower performance. Calculate evaporation loss, blowdown, makeup water, cycles of concentration (COC), efficiency, and thermal duty (kW/TR).

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Chemical & Process Tools PAGES

Jan 12, 2026

Thermic Fluids Properties Calculator

Calculate thermophysical properties for Therminol heat transfer fluids (T66, VP1, T55, XP). Get density, viscosity, specific heat, and phase warnings instantly

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Universal Engineering Unit Converter

Convert engineering, scientific, and industrial units instantly across length, mass, energy, pressure, flow, heat transfer, electrical, and thermodynamic proper

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Storage Tank Size & Level Calculator | API 650 Compliant

Design atmospheric storage tanks with API 650 checks including working volume, HHLL, HLL, NLL, LLL, LLLL, H/D ratio, and overflow verification.

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Manual Valve Cv Calculator | Ball, Globe, Gate & Butterfly

Estimate valve flow coefficient (Cv) and calculate liquid flow or pressure drop for manual valves based on valve type, size, rating, and geometry.

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Steam Jet Ejector Calculator | HEI Vacuum System Design

Calculate steam jet ejector performance using HEI methods to determine motive steam flow, suction pressure, and discharge pressure.

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Steam Tracing Calculator | Process Line Freeze Protection

Estimate steam tracing heat requirements to maintain pipe temperature, prevent freezing, and select steam flow for traced lines.

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Slug Catcher Sizing Calculator | Vessel & Finger Type

Size vessel-type or finger-type slug catchers based on liquid slug volume, retention time, and gas capacity checks.

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Relative Humidity Calculator | Psychrometric Properties

Calculate relative humidity, dew point, and moisture content using dry-bulb and wet-bulb temperatures for HVAC and process air analysis.

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Pipe Heat Loss Calculator | ASTM C680 & Crane TP-410

Calculate heat loss from above-ground or buried pipes considering insulation, wind, soil, radiation, and convection effects.

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Omega Method PSV Calculator | API 520 Two-Phase Relief

Size pressure safety valves using the Omega Method for two-phase and subcooled liquid relief scenarios as per API 520 and API 526.

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Tank Heat Loss Calculator | Insulated Storage Tank Thermal Loss

Estimate heat loss from vertical storage tanks considering insulation, ambient conditions, liquid level, and API/ASTM thermal methods.

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Sump Caisson Sizing Calculator | Oil & Water Drain Systems

Size sump caissons for oily water and drainage systems using industry correlations, inflow rates, submergence, and skim section checks.

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Pneumatic Test Stored Energy Calculator | Compressed Gas Safety

Calculate stored energy during pneumatic testing of piping and vessels. Estimate equivalent TNT energy and screening safe distance for test safety.

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Free Air Delivery (FAD) Calculator | ISO 1217 Compressor Test

Calculate compressor free air delivery (FAD) as per ISO 1217 using intake conditions, pressure, temperature, and correction factors.

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Flash Steam Calculator | Steam Recovery & Energy Balance

Calculate flash steam generation from condensate pressure reduction and analyze vapor-liquid split, energy recovery, and downstream steam balance.

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Flare Purge Gas Calculator | Flare Tip & Stack Purging

Estimate purge gas requirements for flare tips and stacks to prevent air ingress and flashback based on diameter, pressure, and gas properties.

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Steam Ejector Calculator | Suction, Discharge & Steam Flow

Analyze steam ejector performance using equivalent air load method. Solve for suction pressure, discharge pressure, or motive steam flow.

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Chemical Injection Dosing Rate Calculator

Calculate chemical injection rates based on ppm, mg/L, stoichiometry, or batch dosing for corrosion inhibitors, biocides, scavengers, and chemicals.

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Batch Cooling Heat Duty Calculator | Unsteady State Heat Transfer

Estimate batch cooling time and heat duty using unsteady-state heat transfer with constant UA for well-mixed vessels and process cooling design.

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Hydrate Inhibitor Injection Calculator

Calculate methanol or MEG injection rates for hydrate prevention using hydrate temperature depression, safety margin, and free water content.

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Gravity Flow Pipe Design Calculator | Manning Based Open Channel Flow

Design and analyze gravity flow pipelines using Manning equation. Calculate slope, diameter, velocity, head loss, and fittings for metric and imperial units.

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Chemical & Process Tools PAGES

Dec 14, 2025

Surge Pressure & Water Hammer Calculator for Pipelines

Estimate surge pressure due to rapid valve closure using fluid, pipe and operating data. Check peak pressure against MAOP for safe design.

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Chemical & Process Tools PAGES

Dec 14, 2025

Nitrogen Purging Calculator

Calculate nitrogen consumption for sweep-through, pressure and vacuum purging methods to reach safe oxygen concentration in vessels and pipelines.

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Chemical & Process Tools PAGES

Dec 14, 2025

Compressor Settle-Out Pressure & Temperature Calculator

Calculate compressor settle-out pressure and temperature after shutdown using gas properties, volumes and energy balance for process safety checks.

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Chemical & Process Tools PAGES

Dec 14, 2025

Equivalent Length Calculator (K-Factor)

Convert fitting and valve K-factors to equivalent length and estimate minor losses for piping pressure drop calculations.

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Chemical & Process Tools PAGES

Dec 14, 2025

Cryogenic Heat Leak & BOG Calculator

Calculate cryogenic tank heat leak, boil-off gas (BOG) rate and pressure rise using insulation UA modeling for LNG and NGL storage.

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Chemical & Process Tools PAGES

Dec 14, 2025

KO Drum Sizing Calculator

Size knockout drums for relief and flare systems using API 521 screening. Includes droplet settling, vapor velocity and demister checks.

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Chemical & Process Tools PAGES

Dec 14, 2025

Compressor Performance Estimator

Estimate compressor polytropic head, discharge temperature, power and number of stages with real gas effects and anti-surge screening.

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Chemical & Process Tools PAGES

Dec 14, 2025

Control Valve Noise & Cavitation Calculator

Predict control valve cavitation, choked flow and noise using IEC 60534 screening. Includes sigma index and trim selection guidance.

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Chemical & Process Tools PAGES

Dec 14, 2025

Distillation Column Design Calculator (FUG) | Shortcut Sizing

Shortcut distillation column design using Fenske–Underwood–Gilliland. Estimate stages, reflux ratio, feed stage and preliminary column sizing.

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Vessel Volume Calculator

Calculate total and partial volumes for horizontal or vertical vessels with various head types. Includes a process sizing mode based on residence time.

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Two Phase Separator Sizing

Size vertical and horizontal two-phase separators. Calculates vessel diameter and length based on flow rates, fluid properties, and holdup requirements.

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Two Phase Pressure drop Calculator

Calculate two-phase flow pressure drop using correlations like Beggs & Brill and Lockhart-Martinelli. Determines liquid holdup and flow patterns.

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Steam System Calculator

A comprehensive steam system calculator for properties, pipe pressure drop, and heat loss. Analyze system efficiency and calculate condensate formation.

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Relief Valve Sizing Calculator

Size pressure relief valves (PSV) for gas, liquid, and steam service according to API 520/521. Calculates required orifice area and selects standard size.

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Refrigeration System Calculator

Analyze and design refrigeration systems. Calculate cooling loads, compressor power, COP, and size heat exchangers for various refrigerants.

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Pump Hydraulics Calculator

A complete pump hydraulics calculator for sizing centrifugal pump systems. Determines TDH, NPSHa, power requirements, and generates a system curve.

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Line Pressure Drop Calculator

Calculate single-phase pressure drop in pipes for liquids and gases. Uses Darcy-Weisbach and Hazen-Williams methods for accurate hydraulic analysis.

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Orifice Plate Sizing

Size orifice plate flow meters for liquid or gas service using ISO 5167. Calculate beta ratio, orifice diameter, and check sizing validity.

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Heat Exchanger Calculator

Design and size heat exchangers with our comprehensive calculator. Solves for heat duty, LMTD, surface area, and effectiveness for various exchanger types.

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Gravity flow calculator

Size gravity flow lines using the Froude number to determine self-venting or non-self-venting flow regimes and calculate required pipe diameters.

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Gas Volume Convertor

Convert gas volume flow rates between standard (S), normal (N), and actual (A) conditions. Handles units like Sm³/h, Nm³/h, SCFM, and MMSCFD.

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Flare System Calculator

Design and analyze flare systems with our calculator. Performs flare tip sizing, stack height, and radiation calculations based on API 521 standards.

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Expansion Vessel Sizing

Size an expansion vessel for heating or chilled water systems. Calculates total system volume, required expansion volume, and checks vessel adequacy.

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Desuperheater Sizing

Calculate the required boiler feedwater (BFW) flow to control superheated steam temperature with this easy-to-use desuperheater sizing calculator

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Control Valve Sizing

Size control valves for liquid, gas, and two-phase services with our Cv calculator. Compliant with ISA-75.01.01 standards for accurate valve sizing

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Air Receiver Sizing

Calculate the optimal air receiver tank size for your compressed air system. A free online tool for sizing based on flow rate, pressure, and storage time

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