4.5 W/m²·K to BTU/hr·ft²·°F

4.5 W/m²·K = 0.7925 BTU/hr·ft²·°F

W/m²·KBTU/hr·ft²·°F
3 W/m²·K0.5283
3.5 W/m²·K0.6164
4 W/m²·K0.7044
4.50.7925
5 W/m²·K0.8806
5.5 W/m²·K0.9686
6 W/m²·K1.0567

4.5 W/m²·K = 0.7925 BTU/hr·ft²·°F

Formula

1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K)