Question 1

What is 21 W/m²·K in BTU/hr·ft²·°F?

Accepted Answer

21 W/m²·K = 3.6983 BTU/hr·ft²·°F. Use the converter on this page to convert to other heat transfer coefficient units instantly.

Question 2

How do you convert W/m²·K to BTU/hr·ft²·°F?

Accepted Answer

Formula: 1 W/(m²·K) = 0.176110 BTU/(hr·ft²·°F) · 1 BTU/(hr·ft²·°F) = 5.67826 W/(m²·K). Multiply your W/m²·K value by the appropriate factor to get BTU/hr·ft²·°F, or use the interactive converter above.

Question 3

What is 3.6983 BTU/hr·ft²·°F in W/m²·K?

Accepted Answer

3.6983 BTU/hr·ft²·°F = 21 W/m²·K.

W/m²·K	BTU/hr·ft²·°F
15 W/m²·K	2.6417
17 W/m²·K	2.9939
19 W/m²·K	3.3461
21	3.6983
23 W/m²·K	4.0505
25 W/m²·K	4.4028
27 W/m²·K	4.755

21 W/m²·K to BTU/hr·ft²·°F

Formula