400.5 W/m²·K to BTU/hr·ft²·°F

400.5 W/m²·K = 70.5322 BTU/hr·ft²·°F

W/m²·KBTU/hr·ft²·°F
385.5 W/m²·K67.8905
390.5 W/m²·K68.7711
395.5 W/m²·K69.6516
400.570.5322
405.5 W/m²·K71.4127
410.5 W/m²·K72.2933
415.5 W/m²·K73.1738

400.5 W/m²·K = 70.5322 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)