About Heat Flux

Heat flux measures power passing through a surface area.

Common Unit Families

Metric / SI

Watt per Square Meter, Kilowatt per Square Meter, Watt per Square Centimeter, Calorie per Second per Square Centimeter

Imperial / customary

BTU per Hour per Square Foot, Watt per Square Foot, Watt per Square Inch

Supported Units

• W/m² Watt per Square Meter
• kW/m² Kilowatt per Square Meter
• W/cm² Watt per Square Centimeter
• BTU/(h·ft²) BTU per Hour per Square Foot
• W/ft² Watt per Square Foot
• W/in² Watt per Square Inch
• cal/(s·cm²) Calorie per Second per Square Centimeter