278.5 W/m²·K to BTU/hr·ft²·°F

278.5 W/m²·K = 49.0467 BTU/hr·ft²·°F

W/m²·KBTU/hr·ft²·°F
263.5 W/m²·K46.4051
268.5 W/m²·K47.2856
273.5 W/m²·K48.1662
278.549.0467
283.5 W/m²·K49.9273
288.5 W/m²·K50.8078
293.5 W/m²·K51.6884

278.5 W/m²·K = 49.0467 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)