A quick two-way kW ⇄ BTU/h converter: type in either box, choose how many decimals you want and copy the answer with one click.
kW
BTU/h
Step-by-step calculation
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How to use the kW to BTU Converter
Type a value in the Kilowatts box. The BTU per hour result appears instantly.
Going the other way? Type in the BTU per hour box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.
Kilowatts to BTU per hour formula
BTU/h = kW × 3412.141633
Take the value in kilowatts.
Multiply it by 3412.141633 (the number of BTU per hour in one kilowatt).
Example: 3.5 kW × 3412.141633 = 11,942.5 BTU/h.
Reverse formula (BTU per hour to kilowatts): kW = BTU/h ÷ 3412.141633. Example: 255,911 BTU/h ÷ 3412.141633 = 75 kW.
Quick mental estimate: multiply by about 3400. For exact answers use the converter above.
kW to BTU/h conversion table (1–100)
Click any row to load it into the converter.
Kilowatts to BTU per hour
Kilowatts
BTU per hour
1 kW
3,412.14 BTU/h
2 kW
6,824.28 BTU/h
3 kW
10,236.42 BTU/h
4 kW
13,648.57 BTU/h
5 kW
17,060.71 BTU/h
6 kW
20,472.85 BTU/h
7 kW
23,884.99 BTU/h
8 kW
27,297.13 BTU/h
9 kW
30,709.27 BTU/h
10 kW
34,121.42 BTU/h
11 kW
37,533.56 BTU/h
12 kW
40,945.7 BTU/h
13 kW
44,357.84 BTU/h
14 kW
47,769.98 BTU/h
15 kW
51,182.12 BTU/h
16 kW
54,594.27 BTU/h
17 kW
58,006.41 BTU/h
18 kW
61,418.55 BTU/h
19 kW
64,830.69 BTU/h
20 kW
68,242.83 BTU/h
21 kW
71,654.97 BTU/h
22 kW
75,067.12 BTU/h
23 kW
78,479.26 BTU/h
24 kW
81,891.4 BTU/h
25 kW
85,303.54 BTU/h
26 kW
88,715.68 BTU/h
27 kW
92,127.82 BTU/h
28 kW
95,539.97 BTU/h
29 kW
98,952.11 BTU/h
30 kW
102,364.25 BTU/h
31 kW
105,776.39 BTU/h
32 kW
109,188.53 BTU/h
33 kW
112,600.67 BTU/h
34 kW
116,012.82 BTU/h
35 kW
119,424.96 BTU/h
36 kW
122,837.1 BTU/h
37 kW
126,249.24 BTU/h
38 kW
129,661.38 BTU/h
39 kW
133,073.52 BTU/h
40 kW
136,485.67 BTU/h
41 kW
139,897.81 BTU/h
42 kW
143,309.95 BTU/h
43 kW
146,722.09 BTU/h
44 kW
150,134.23 BTU/h
45 kW
153,546.37 BTU/h
46 kW
156,958.52 BTU/h
47 kW
160,370.66 BTU/h
48 kW
163,782.8 BTU/h
49 kW
167,194.94 BTU/h
50 kW
170,607.08 BTU/h
51 kW
174,019.22 BTU/h
52 kW
177,431.36 BTU/h
53 kW
180,843.51 BTU/h
54 kW
184,255.65 BTU/h
55 kW
187,667.79 BTU/h
56 kW
191,079.93 BTU/h
57 kW
194,492.07 BTU/h
58 kW
197,904.21 BTU/h
59 kW
201,316.36 BTU/h
60 kW
204,728.5 BTU/h
61 kW
208,140.64 BTU/h
62 kW
211,552.78 BTU/h
63 kW
214,964.92 BTU/h
64 kW
218,377.06 BTU/h
65 kW
221,789.21 BTU/h
66 kW
225,201.35 BTU/h
67 kW
228,613.49 BTU/h
68 kW
232,025.63 BTU/h
69 kW
235,437.77 BTU/h
70 kW
238,849.91 BTU/h
71 kW
242,262.06 BTU/h
72 kW
245,674.2 BTU/h
73 kW
249,086.34 BTU/h
74 kW
252,498.48 BTU/h
75 kW
255,910.62 BTU/h
76 kW
259,322.76 BTU/h
77 kW
262,734.91 BTU/h
78 kW
266,147.05 BTU/h
79 kW
269,559.19 BTU/h
80 kW
272,971.33 BTU/h
81 kW
276,383.47 BTU/h
82 kW
279,795.61 BTU/h
83 kW
283,207.76 BTU/h
84 kW
286,619.9 BTU/h
85 kW
290,032.04 BTU/h
86 kW
293,444.18 BTU/h
87 kW
296,856.32 BTU/h
88 kW
300,268.46 BTU/h
89 kW
303,680.61 BTU/h
90 kW
307,092.75 BTU/h
91 kW
310,504.89 BTU/h
92 kW
313,917.03 BTU/h
93 kW
317,329.17 BTU/h
94 kW
320,741.31 BTU/h
95 kW
324,153.46 BTU/h
96 kW
327,565.6 BTU/h
97 kW
330,977.74 BTU/h
98 kW
334,389.88 BTU/h
99 kW
337,802.02 BTU/h
100 kW
341,214.16 BTU/h
BTU per hour to kilowatts
BTU per hour
Kilowatts
1 BTU/h
0 kW
2 BTU/h
0 kW
3 BTU/h
0 kW
4 BTU/h
0 kW
5 BTU/h
0 kW
6 BTU/h
0 kW
7 BTU/h
0 kW
8 BTU/h
0 kW
9 BTU/h
0 kW
10 BTU/h
0 kW
11 BTU/h
0 kW
12 BTU/h
0 kW
13 BTU/h
0 kW
14 BTU/h
0 kW
15 BTU/h
0 kW
16 BTU/h
0 kW
17 BTU/h
0 kW
18 BTU/h
0.01 kW
19 BTU/h
0.01 kW
20 BTU/h
0.01 kW
21 BTU/h
0.01 kW
22 BTU/h
0.01 kW
23 BTU/h
0.01 kW
24 BTU/h
0.01 kW
25 BTU/h
0.01 kW
26 BTU/h
0.01 kW
27 BTU/h
0.01 kW
28 BTU/h
0.01 kW
29 BTU/h
0.01 kW
30 BTU/h
0.01 kW
31 BTU/h
0.01 kW
32 BTU/h
0.01 kW
33 BTU/h
0.01 kW
34 BTU/h
0.01 kW
35 BTU/h
0.01 kW
36 BTU/h
0.01 kW
37 BTU/h
0.01 kW
38 BTU/h
0.01 kW
39 BTU/h
0.01 kW
40 BTU/h
0.01 kW
41 BTU/h
0.01 kW
42 BTU/h
0.01 kW
43 BTU/h
0.01 kW
44 BTU/h
0.01 kW
45 BTU/h
0.01 kW
46 BTU/h
0.01 kW
47 BTU/h
0.01 kW
48 BTU/h
0.01 kW
49 BTU/h
0.01 kW
50 BTU/h
0.01 kW
51 BTU/h
0.01 kW
52 BTU/h
0.02 kW
53 BTU/h
0.02 kW
54 BTU/h
0.02 kW
55 BTU/h
0.02 kW
56 BTU/h
0.02 kW
57 BTU/h
0.02 kW
58 BTU/h
0.02 kW
59 BTU/h
0.02 kW
60 BTU/h
0.02 kW
61 BTU/h
0.02 kW
62 BTU/h
0.02 kW
63 BTU/h
0.02 kW
64 BTU/h
0.02 kW
65 BTU/h
0.02 kW
66 BTU/h
0.02 kW
67 BTU/h
0.02 kW
68 BTU/h
0.02 kW
69 BTU/h
0.02 kW
70 BTU/h
0.02 kW
71 BTU/h
0.02 kW
72 BTU/h
0.02 kW
73 BTU/h
0.02 kW
74 BTU/h
0.02 kW
75 BTU/h
0.02 kW
76 BTU/h
0.02 kW
77 BTU/h
0.02 kW
78 BTU/h
0.02 kW
79 BTU/h
0.02 kW
80 BTU/h
0.02 kW
81 BTU/h
0.02 kW
82 BTU/h
0.02 kW
83 BTU/h
0.02 kW
84 BTU/h
0.02 kW
85 BTU/h
0.02 kW
86 BTU/h
0.03 kW
87 BTU/h
0.03 kW
88 BTU/h
0.03 kW
89 BTU/h
0.03 kW
90 BTU/h
0.03 kW
91 BTU/h
0.03 kW
92 BTU/h
0.03 kW
93 BTU/h
0.03 kW
94 BTU/h
0.03 kW
95 BTU/h
0.03 kW
96 BTU/h
0.03 kW
97 BTU/h
0.03 kW
98 BTU/h
0.03 kW
99 BTU/h
0.03 kW
100 BTU/h
0.03 kW
Common values
Kilowatts
BTU per hour
Example
0.75 kW
2,559.11 BTU/h
About 1 hp
1 kW
3,412.14 BTU/h
1 kW
5 kW
17,060.71 BTU/h
5 kW
7.4 kW
25,249.85 BTU/h
Home EV charger
50 kW
170,607.08 BTU/h
50 kW
75 kW
255,910.62 BTU/h
Small car engine
100 kW
341,214.16 BTU/h
100 kW
150 kW
511,821.24 BTU/h
150 kW
250 kW
853,035.41 BTU/h
Performance car
500 kW
1,706,070.82 BTU/h
500 kW
About kilowatts and BTU per hour
Kilowatts (kW). The kilowatt is 1,000 watts. Engines, motors, heaters and EV chargers are rated in kW.
BTU per hour (BTU/h). BTU per hour (often just written 'BTU' on air conditioners and heaters) is a power rating. 12,000 BTU/h is one 'ton' of cooling.
Frequently asked questions
1 kilowatt equals how many BTU per hour?
One kilowatt equals 3,412.14 BTU per hour.
How do you convert kilowatts to BTU per hour?
Multiply the number of kilowatts by 3412.141633. For example, 3.5 kW × 3412.141633 = 11,942.5 BTU/h.
What is 75 kilowatts in BTU per hour?
75 kW is 255,911 BTU/h (small car engine).
How much is 250 kilowatts in BTU per hour?
250 kilowatts equals 853,035 BTU per hour.
How do I convert BTU per hour back to kilowatts?
Divide by 3412.141633, or press the ⇄ swap button above. For example, 255,911 BTU/h ÷ 3412.141633 = 75 kW.
What is the difference between BTU and BTU/h?
BTU is an amount of energy, while BTU per hour is power (energy per hour). Air conditioners are sold by BTU/h, even though the label often just says 'BTU'. 12,000 BTU/h equals one ton of refrigeration (3.517 kW).