U-Value to U-Factor Converter
What is U-Value and U-Factor?
Understanding thermal performance is crucial for making energy-efficient building decisions. Here’s a breakdown:
What is U-Value? (European Standard)
- The U-Value (W/m²K) measures how much heat is lost through a material per square meter per degree of temperature difference.
- Lower U-Value = Better Insulation & Higher Energy Efficiency.
- Example: A European triple-glazed window may have a U-Value of 0.8 W/m²K, indicating superior thermal insulation.
What is U-Factor? (U.S. Standard)
- The U-Factor (Btu/h·ft²·F) is used in the United States and Canada to measure the rate of heat transfer per square foot per hour per degree Fahrenheit.
- Like U-Value, a lower U-Factor means better insulation.
- Example: A high-performance U.S. window may have a U-Factor of 0.14 Btu/h·ft²·F.
Conversion Formula:
- European U-Value → U.S. U-Factor:
U.S. U-Factor = U-Value / 5.678 - U.S. U-Factor → European U-Value:
U-Value = U-Factor * 5.678
The U-Value to U-Factor Converter is a simple yet powerful calculator designed to help architects, engineers, contractors, and homeowners instantly convert between the European U-Value (W/m²K) and the U.S. U-Factor (Btu/h·ft²·F).
This tool ensures accurate energy efficiency comparisons across different standards for windows, doors, and insulation materials.
U-Value Converter
EU to US
US to EU
U.S. U-Factor: - Btu/h·ft²·°F
