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Heat Flux Density Converter
W/m², BTU/(h·ft²)
Heat Flux Density Converter
About the heat flux density converter
This converter handles 7 heat flux density units. Enter a value in either field and the other updates instantly — there is no button to press and nothing to submit. Use the swap control to reverse the direction of the conversion.
All factors are stored against a single base unit
(
Watt/meter²) and applied in one step, so converting A → B
never accumulates rounding error from an intermediate hop.Quick reference table
| Watt/meter² | BTU/(hour·ft²) |
|---|---|
| 1 W/m² | 0.3169983306 hour·ft² |
| 2 W/m² | 0.6339966613 hour·ft² |
| 5 W/m² | 1.584991653 hour·ft² |
| 10 W/m² | 3.169983306 hour·ft² |
| 20 W/m² | 6.339966613 hour·ft² |
| 50 W/m² | 15.84991653 hour·ft² |
| 100 W/m² | 31.69983306 hour·ft² |
| 500 W/m² | 158.4991653 hour·ft² |
| 1000 W/m² | 316.9983306 hour·ft² |
All 7 units
| Unit | Equals in Watt/meter² |
|---|---|
| Watt/meter² (W/m²) | 1 |
| Kilowatt/meter² | 1000 |
| Watt/centimeter² | 10000 |
| Calorie/(second·cm²) | 41840 |
| Kilocalorie/(hour·m²) | 1.163 |
| BTU/(hour·ft²) | 3.154590745 |
| BTU/(second·ft²) | 11356.52684 |