Calculator
Heat Transfer
Heat Exchanger Area Calculator
Estimate heat-transfer area from heat duty, overall U, reference LMTD, and supplied correction factor, with SI and engineering units, corrected temperature difference, and…
A = Q / (U F ΔTₗₘ)
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Practical tools for chemical engineering problems. Choose a calculator, set your inputs, and follow the method.
10 RESOURCES
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Calculator
Thermodynamics & Properties
Ideal-Gas Density Calculator
Estimate ideal-gas mass density from absolute pressure, temperature, and molar mass with SI and engineering units, normalized steps, and model assumptions.
ρ = PM / RT
Calculator
Material & Energy Balances
Mass–Molar Flow Converter
Convert mass flow and molar flow in both directions with explicit molar mass, SI and imperial unit bases, normalized steps, and component or…
ṅ = ṁ / M
Calculator
Fluid Flow
Pump Hydraulic and Shaft Power Calculator
Calculate hydraulic power, mechanical pump shaft power, and pump losses from actual flow, total pump head, fluid density, gravity, and pump efficiency.
P = ρgQH / η
Calculator
Fluid Flow
Pressure–Head Converter
Convert pressure difference and equivalent fluid head in either direction with explicit density and gravity, SI and engineering units, and worked steps.
h = ΔP / ρg
Calculator
Engineering Units
Engineering Unit Converter
Convert SI and engineering units with quantity checks, separate temperature readings and differences, traceable conversion factors, and worked steps.
SI ↔ Engineering units
Calculator
Fluid Flow
Pipe Velocity Calculator
Calculate mean pipe velocity from actual volumetric flow and internal diameter, with SI and engineering units, flow area, worked steps, and an example.
v = 4Q / πD²
Calculator
Fluid Flow
Reynolds Number Calculator
Calculate Reynolds number with dynamic or kinematic viscosity, SI and engineering units, explicit diameter basis, and circular-pipe flow-regime guidance.
Re = ρ v D / μ
Calculator
Heat Transfer
Sensible Heat Duty Calculator
Calculate sensible heating or cooling duty from mass flow, specific heat capacity, and temperature change, with SI and engineering units and worked steps.
Q = ṁ cₚ ΔT
Calculator
Heat Transfer
LMTD Calculator
Calculate log mean temperature difference for countercurrent and parallel heat exchangers, with unit conversion, end differences, and a temperature diagram.
ΔTₗₘ = (ΔT₁ − ΔT₂) / ln(ΔT₁/ΔT₂)