Thermodynamics & Heat Transfer Calculators
Heat-transfer and thermodynamic calculations for engineers and students: Fourier conduction with series resistances, material expansion, gas laws and the sensible/latent heat relations behind HVAC and process work.
Heat Transfer
Conduction through walls, U-values and heating power from flow rates.
- Heat Conduction CalculatorCalculate heat flow through a wall from up to three layers: series thermal resistances, U-value, R-value and total watts — with the air-film caveat.
- Heating Power CalculatorCalculate heating or cooling power from flow rate and temperature difference for water, glycol mixes and oil — the boiler, coil and chiller rating equation.
Materials & Gases
Thermal expansion, ideal gas law and sensible/latent heat of common materials.
- Thermal Expansion CalculatorCalculate linear thermal expansion for steel, aluminum, copper, PVC, PE and more: length change in mm and inches, with expansion-loop context.
- Ideal Gas CalculatorSolve the ideal gas law: enter any two of pressure, volume and temperature to get the third (n fixed), in kPa, litres and Kelvin with unit cross-references.
- Sensible & Latent Heat CalculatorCalculate sensible heat for water, air, metals and concrete with the water-phase latent heats shown for scale — the relations behind HVAC and process heating.