640.5 BTU/hr·ft²·°F to W/m²·K

640.5 BTU/hr·ft²·°F = 3,636.926 W/m²·K

BTU/hr·ft²·°FW/m²·K
625.5 BTU/hr·ft²·°F3,551.752
630.5 BTU/hr·ft²·°F3,580.143
635.5 BTU/hr·ft²·°F3,608.534
640.53,636.926
645.5 BTU/hr·ft²·°F3,665.317
650.5 BTU/hr·ft²·°F3,693.708
655.5 BTU/hr·ft²·°F3,722.099

640.5 BTU/hr·ft²·°F = 3,636.926 W/m²·K

Formula

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