Metric Conversions
Metric Conversions

Watts to BTU per Hour (W → BTU/h)

3.4121

1.0000 W = 3.4121 BTU/h

Formula

1 W = 3.4121424501230075 BTU/h
BTU per Hour → Watts (Swap Units)

Conversion Table

WBTU/h
00
1.00003.4121
2.00006.8243
3.000010.236
4.000013.649
5.000017.061
6.000020.473
7.000023.885
8.000027.297
9.000030.709
10.00034.121
11.00037.534
12.00040.946
13.00044.358
14.00047.770
15.00051.182
16.00054.594
17.00058.006
18.00061.419
19.00064.831
WBTU/h
20.00068.243
21.00071.655
22.00075.067
23.00078.479
24.00081.891
25.00085.304
26.00088.716
27.00092.128
28.00095.540
29.00098.952
30.000102.36
31.000105.78
32.000109.19
33.000112.60
34.000116.01
35.000119.42
36.000122.84
37.000126.25
38.000129.66
39.000133.07
WBTU/h
40.000136.49
41.000139.90
42.000143.31
43.000146.72
44.000150.13
45.000153.55
46.000156.96
47.000160.37
48.000163.78
49.000167.19
50.000170.61
51.000174.02
52.000177.43
53.000180.84
54.000184.26
55.000187.67
56.000191.08
57.000194.49
58.000197.90
59.000201.32
WBTU/h
60.000204.73
61.000208.14
62.000211.55
63.000214.96
64.000218.38
65.000221.79
66.000225.20
67.000228.61
68.000232.03
69.000235.44
70.000238.85
71.000242.26
72.000245.67
73.000249.09
74.000252.50
75.000255.91
76.000259.32
77.000262.73
78.000266.15
79.000269.56

Watts to BTU per Hour Conversion

Converting Watts (W) to BTU per Hour (BTU/h) is a common energy and power conversion. 1 W equals 3.412142 BTU/h. For example, 100 W is equal to 341.214245 BTU/h.

Quick Mental Math: Watts to BTU per Hour

For energy conversions, identify the unit scale difference in the prefix or definition.

Why is converting Watts to BTU per Hour tricky?

Energy unit conversions involve non-linear factors across different measurement systems.

Quick Reference Values

1 W = 3.412142 BTU/h. 5 W = 17.060712 BTU/h. 10 W = 34.121425 BTU/h. 25 W = 85.303561 BTU/h. 50 W = 170.607123 BTU/h. 100 W = 341.214245 BTU/h.

What is Watts?

Watts (W) is a unit of energy and power. The watt (W) is the SI unit of power, defined as one joule per second (1 W = 1 J/s). It measures the rate of energy transfer or conversion. The watt is named after James Watt and standardized by the BIPM according to the International System of Units [bipm-si-brochure]. Named after engineer James Watt in the late 19th century, the watt was adopted officially by the CIPM and BIPM to quantify mechanical and electrical power consistently. It became part of the SI base units in 1960 [bipm-si-brochure]. Watts measure power output and consumption in electrical, mechanical, and thermal systems globally. It is used across industries, including electronics, automotive, and power generation, following ISO and NIST standards [nist-sp-811].

What is BTU per Hour?

BTU per Hour (BTU/h) is a unit of energy and power. BTU per hour (BTU/h) quantifies power as the rate of energy transfer equal to one British Thermal Unit delivered in one hour. It converts to approximately 0.293071 watts. This unit is commonly used to rate heating and cooling system capacities and thermal power consumption [nist-sp-811]. The concept of BTU per hour stemmed from the BTU to express continuous heat flow rates in heating and ventilation during the 19th century. It was formalized to measure energy transfer rates in thermal engineering applications [nist-sp-811]. BTU/h is standard in HVAC industry specifications in the US, Canada, and the UK. It is used to indicate the heating or cooling capacity of furnaces, air conditioners, and boilers where SI units are uncommon or supplemented [nist-sp-811].

Common Misspellings

People often search for this conversion using these alternate spellings: watt, wat, wats, wattss, btu per hr, btu/hour, btu per hours, btu per h, btu per hr. All of these refer to the Watts to BTU per Hour conversion.

Common Conversions

Watts → JoulesJoules → BTU per HourWatts → KilojoulesKilojoules → BTU per HourWatts → MegajoulesMegajoules → BTU per HourWatts → GigajoulesGigajoules → BTU per HourWatts → CaloriesCalories → BTU per Hour