Units & converters

Heat flux converter

Convert heat transfer rates per area between W/m², kW/m², W/cm² and Btu per hour per square foot.

Free & no registration Calculated in your browser

Your inputs

The starting values are an example.

Enter your values and select Calculate.

Your calculation will appear here.

Your result will include the relevant values and units.

Understand the calculation

Converted value = original value × source factor / target factor

1 W/cm² = 10000 W/m².

Heat flux is power per unit area. A unit conversion alone does not determine temperature or the thermal performance of a construction.
Rounding is applied only to displayed results. Very small or very large values may appear in scientific notation.