Free Professional Heat transfer & Thermodynamics & Fluid Mechanics Calculator

Accurate engineering calculations for thermal and fluid systems. Free online tools for engineers, students, and professionals.

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Engineering Calculators

Fluid Properties

Calculate density, viscosity, thermal conductivity, and specific heat for various fluids.

Heat Transfer

Compute conduction, convection, and radiation heat transfer coefficients and rates.

Pressure Drop

Determine pressure losses in pipes, fittings, and complex flow systems.

Thermodynamic Cycles

Analyze Rankine, Brayton, Otto, and other thermodynamic cycles.

About ThermoFluidCalc

ThermoFluidCalc provides accurate, easy-to-use online calculators for thermodynamics and fluid mechanics. Our tools are designed for mechanical engineers, chemical engineers, HVAC professionals, and students who need reliable engineering calculations.