Free Tools

Engineering calculators. Free, online, no download.

Built from the same methods taught in CANETCO courses. Enter your parameters and get results instantly - psychrometrics, heat transfer, pressure drop, and more.

Each calculator is based on established engineering standards and validated against real-world practice. Developed by Dr. Mohamed Hamed, P.Eng., FEC - Professor of Mechanical Engineering at McMaster University.

Psychrometrics
Psychrometric Properties Calculator

Enter dry-bulb temperature with relative humidity or wet-bulb temperature to calculate the complete moist air state. SI and IP units.

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Fluid Mechanics
Pipe Pressure Drop Calculator

Calculate pressure drop in pipes for water, air, or steam. Covers laminar and turbulent flow, major and minor losses, pipe sizing, and flow velocity.

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Heat Transfer Coefficient Calculators
Heat Transfer
Forced Convection HTC Calculator: Air Along a Plane Wall

Calculate the convective heat transfer coefficient for forced air flow along a heated plane wall. Based on the Trinks correlation. SI and IP units.

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Heat Transfer
Natural Convection HTC Calculator: Cylinder Outer Surface

Calculate the natural convection heat transfer coefficient from the outer surface of a cylinder immersed in air. ASHRAE correlation. SI and IP units.

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Heat Transfer
Forced Convection HTC Calculator: Air Inside a Pipe or Duct

Calculate the forced convection heat transfer coefficient for air flowing inside a circular cylinder or duct. ASHRAE correlation. SI and IP units.

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Heat Transfer
Furnace Hot Gas HTC Calculator

Calculate the convective heat transfer coefficient for hot recirculating gases in industrial temper furnaces. Mawhinney correlation. SI and IP units.

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Heat Transfer
Combined Convective + Radiation HTC Calculator

Calculate the combined convective and radiation heat transfer coefficient using LMTD and Stefan-Boltzmann radiation formula. SI and IP units.

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Heat Transfer
Natural Convection HTC Calculator: Plate or Cylinder in Air

Calculate the natural convection heat transfer coefficient from a heated vertical or horizontal plate or cylinder in air. ASHRAE correlation. SI and IP units.

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Heat Transfer
Water Spray Quenching HTC Calculator

Calculate the heat transfer coefficient for water spray quenching of hot metal surfaces. Valid for surface temperatures 150-900°C (300-1650°F). SI and IP units.

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Heat Transfer
Air Cross-Flow Over Pipes HTC Calculator

Calculate the convective heat transfer coefficient for air flowing normal to a single pipe in cross flow. ASHRAE correlation with air property polynomials. SI and IP units.

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Heat Transfer
Round Jet Impingement HTC Calculator

Calculate the heat transfer coefficient for a round air jet impinging on a flat surface. Based on Handbook of Heat Transfer correlation. SI and IP units.

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