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All-in-one Unit Converter
Convert length, weight, temperature, acceleration, and more — fast, accurate, and easy to use in one place.
Convert length, weight, temperature, acceleration, and more — fast, accurate, and easy to use in one place.
BTU/h·ft²
W/m²
What is Heat Flux?
Heat flux is a physical quantity that represents the rate of heat transfer per unit area. It is measured using units such as watts per square meter.
Supported Units
Watt per square meter (W/m²)
Calorie per second per square centimeter (cal/s·cm²)
BTU per hour per square foot (BTU/h·ft²)
Conversion Formula
W/m² = BTU/h·ft² x 3.15