How do I convert thermal property units?

Enter your value and the converter calculates equivalents. Thermal units include conductivity (W/m·K), resistance (m²·K/W), and R-values.

What is R-value and U-value?

R-value measures thermal resistance (higher = better insulation). U-value is thermal transmittance (lower = better insulation). U = 1/R.

When are thermal calculations needed?

Thermal calculations are essential for building insulation, HVAC design, heat exchanger sizing, and thermal management in electronics.

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Frequently Asked Questions

Common questions about the Heat Exchanger Effectiveness Calculator - Free Online Tool

Thermal conductivity (W/m·K) measures how well a material conducts heat. Higher values mean better heat transfer. Metals are typically 50-400 W/m·K.

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Sources & References

International System of Units (SI): thermal quantities (heat, conductivity)

Thermal quantities (heat, conductivity) is measured in the watt, kelvin and joule. Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.

→Source: NIST — International System of Units (SI)

International System of Units (SI)

Authoritative definitions for thermal quantities (heat, conductivity), from the BIPM SI Brochure (9th edition), the defining reference for the SI.

→Source: BIPM — SI Brochure (9th ed.)

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