| Abbreviation | Unit | 1 Base Unit |
|---|---|---|
| W/m2 | watt per square metre | 1 |
| Btu[IT]/(h.ft2) | (BTU per hour) per square foot | 3.154590745063049 |
| Btu[IT]/(s.ft2) | BTU per second square foot | 11356.526682226975 |
| W/cm2 | watt per square centimetre | 10000 |
| W/mm2 | watt per square millimetre | 1000000 |
| cal[th]/(h.cm2) | calorie per hour square centimetre | 11.622222222222224 |
| hp/in2 | horsepower per square inch | 1155837.1126267442 |
| hp[hyd]/in2 | hydraulic-horsepower per square inch | 1156368.9627379256 |
| kW/cm2 | kilowatt per square centimetre | 10000000 |
| kW/m2 | kilowatt per square metre | 1000 |
| mW/m2 | milliwatt per square metre | 0.001 |
| ucal[th]/(s.cm2) | millionth of calorie per second square centimetre | 0.04184 |