Thermal Resistance Calculator
Find thermal resistance, heat flow, or temperature difference.
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Formulas
R = L / (k × A)L = thickness, k = thermal conductivity, A = area
ΔT = P × RTemperature difference from power and thermal resistance
Thermal Resistance
Conductivities (W/m·K): Copper: 385, Aluminum: 237, Steel: 50, Glass: 1.0, Wood: 0.15, Air: 0.025. Critical for electronics cooling and building insulation.