UnitConHeat Flux Density
Heat flux density measures the rate of heat transfer through a surface per unit area. It is commonly used in solar energy, electronics cooling, and building-envelope analysis. This converter helps compare SI and US thermal-surface units. It is useful for both engineering calculations and educational reference.
Common conversions
| From | To |
|---|---|
| 1 Watt per Square Meter | 0.3169984 BTU per Hour·Square Foot |
| 1 BTU per Hour·Square Foot | 3.15459 Watt per Square Meter |
| 1000 Watt per Square Meter | 1 Kilowatt per Square Meter |
| 1 Kilowatt per Square Meter | 316.9984 BTU per Hour·Square Foot |
Frequently asked questions
Heat flux is the rate of heat transfer across a surface area. It tells you how intensely heat is moving through that surface.
The solar constant is the approximate solar energy received per unit area outside Earth's atmosphere. It is a common reference point in solar and climate calculations.
Engineers use it to evaluate insulation, heat exchangers, cooling performance, and solar loads. It is especially useful when area-based thermal loading matters.