From To W/m² kW/m² W/cm² BTU/(h·ft²)
W/m² 1 0.001 0.0001 0.316998
kW/m² 1000 1 0.1 316.998
W/cm² 10000 10 1 3169.98
BTU/(h·ft²) 3.15459 0.003155 0.000315 1

Each cell shows the factor to convert 1 unit of the row header into the column header.

Highlighted diagonal cells represent identity conversions (1:1).