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Professional-grade tools for heat transfer, thermodynamics, and fluid mechanics. Powered by Fortran computation engines for accuracy engineers demand.
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Comprehensive calculators covering the core disciplines of thermal and fluid engineering.
Heat Transfer
Compute conduction through walls, cylinders, and spheres. Analyze convection, radiation, fins, and heat exchangers with accurate engineering correlations.
Fluid Mechanics
Calculate pressure drop, Reynolds number, friction factors, and flow properties. Analyze pipe networks, external flow, and compressible flow systems.
Thermodynamics
Analyze power cycles (Rankine, Brayton, Otto, Diesel), refrigeration systems, steam properties, and energy balances for engineering systems.
Engineering Tools
Quick-access tools: unit converter, dimensionless numbers calculator, material property database, and interactive reference charts.
Blog & Tutorials
In-depth articles, step-by-step tutorials, and practical guides on thermal engineering concepts with worked examples.
Our Engineering Calculators
Fully operational calculators powered by Fortran computation engines. More tools added regularly.
๐ฅ Heat Conduction
Steady Conduction in Plane Walls
Calculate heat transfer through single and multilayer plane walls with thermal resistance analysis.
Open Calculator โMultilayered Cylinders & Spheres
Analyze heat conduction through multilayered cylindrical and spherical geometries.
Open Calculator โCritical Radius of Insulation
Determine the critical radius at which adding insulation increases heat transfer rate.
Open Calculator โStraight Rectangular Fins
Calculate fin efficiency, effectiveness, and heat dissipation for rectangular fins.
Open Calculator โ๐จ Convection
Flow Over Flat Plate
Laminar/turbulent boundary layer analysis with local and average Nusselt number correlations.
Open Calculator โInternal Flow in Circular Tubes
Dittus-Boelter and Gnielinski correlations with pressure drop and outlet temperature.
Open Calculator โ๐ Heat Exchangers
๐ Fluid Mechanics
Pipe Flow & Pressure Drop
Darcy-Weisbach with Colebrook-White friction factor, minor losses, and Moody chart.
Open Calculator โDrag Force Calculator
Drag on spheres, cylinders, flat plates with Reynolds-dependent Cd correlations.
Open Calculator โCompressible Flow
Isentropic relations, normal shock, area ratios, and flow property tables.
Open Calculator โโก Thermodynamics
Ideal Gas Law
Solve for P, V, T, or n with 7 gas presets and P-V diagram visualization.
Open Calculator โRankine Cycle
Steam power plant analysis with T-s diagram and efficiency calculations.
Open Calculator โRefrigeration Cycle
Vapor compression analysis with 4 refrigerants and P-h diagram.
Open Calculator โ๐ Engineering Tools
Built for Engineers, by Engineers
Designed to deliver the accuracy and usability that engineering professionals expect.
Fortran-Powered
Calculations run on compiled Fortran programs โ the gold standard for numerical computation in engineering.
Verified Accuracy
Results validated against textbook examples and established engineering correlations.
Visual Results
Interactive charts, temperature profiles, and wall diagrams make results intuitive to interpret.
100% Free
All calculators are completely free. No signup required, no feature gates, no limitations.
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Jump into our heat conduction calculators โ more categories coming soon.
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