BTU/(s·ft²·°F)
BTU per second square foot Fahrenheit
Heat transfer coefficientexact by definition
The BTU per second square foot Fahrenheit is 20441.74879 W/(m²·K), 3600 times the familiar hourly US unit. It belongs to aerothermodynamics and short-duration heating, where per-hour numbers would be absurd: re-entry and rocket nozzle heat transfer are worked per second.
| 1 BTU/(s·ft²·°F) | 20,441.748 W/(m²·K) |
Solvers that use heat transfer coefficient