Spectral Blackbody Emissive Power is usually measured using the Watt per Cubic Meter[W/m³] for Emissive Power per Unit Wavelength. Watt per Square Meter per Kilometer[W/m³], Kilowatt per Square Meter per Kilometer[W/m³] are the few other units in which Spectral Blackbody Emissive Power can be measured.