13.5 W/m²·K to BTU/hr·ft²·°F

13.5 W/m²·K = 2.3775 BTU/hr·ft²·°F

W/m²·KBTU/hr·ft²·°F
10.5 W/m²·K1.8492
11.5 W/m²·K2.0253
12.5 W/m²·K2.2014
13.52.3775
14.5 W/m²·K2.5536
15.5 W/m²·K2.7297
16.5 W/m²·K2.9058

13.5 W/m²·K = 2.3775 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)