28 W/m²·K to BTU/hr·ft²·°F

28 W/m²·K = 4.9311 BTU/hr·ft²·°F

W/m²·KBTU/hr·ft²·°F
22 W/m²·K3.8744
24 W/m²·K4.2266
26 W/m²·K4.5789
284.9311
30 W/m²·K5.2833
32 W/m²·K5.6355
34 W/m²·K5.9877

28 W/m²·K = 4.9311 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)