Home › Unit Converters › BTU to Watts Converter

BTU to Watts Converter

A quick two-way BTU/h ⇄ W converter: type in either box, choose how many decimals you want and copy the answer with one click.

BTU/h
W
 

Step-by-step calculation

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    How to use the BTU to Watts Converter

    1. Type a value in the BTU per hour box. The watts result appears instantly.
    2. Going the other way? Type in the Watts box, or press the ⇄ swap button.
    3. Set the precision with the decimal places menu.
    4. Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

    BTU per hour to watts formula

    W = BTU/h ÷ 3.412141633
    1. Take the value in BTU per hour.
    2. Divide it by 3.412141633 (the number of BTU per hour in one watt).

    Example: 12,000 BTU/h ÷ 3.412141633 = 3,516.85 W.

    Reverse formula (watts to BTU per hour): BTU/h = W × 3.412141633. Example: 5,275.28 W × 3.412141633 = 18,000 BTU/h.

    Quick mental estimate: divide by about 3.4. For exact answers use the converter above.

    BTU/h to W conversion table (1–100)

    Click any row to load it into the converter.

    BTU per hour to watts

    BTU per hourWatts
    1 BTU/h0.293 W
    2 BTU/h0.586 W
    3 BTU/h0.879 W
    4 BTU/h1.172 W
    5 BTU/h1.465 W
    6 BTU/h1.758 W
    7 BTU/h2.051 W
    8 BTU/h2.345 W
    9 BTU/h2.638 W
    10 BTU/h2.931 W
    11 BTU/h3.224 W
    12 BTU/h3.517 W
    13 BTU/h3.81 W
    14 BTU/h4.103 W
    15 BTU/h4.396 W
    16 BTU/h4.689 W
    17 BTU/h4.982 W
    18 BTU/h5.275 W
    19 BTU/h5.568 W
    20 BTU/h5.861 W
    21 BTU/h6.154 W
    22 BTU/h6.448 W
    23 BTU/h6.741 W
    24 BTU/h7.034 W
    25 BTU/h7.327 W
    26 BTU/h7.62 W
    27 BTU/h7.913 W
    28 BTU/h8.206 W
    29 BTU/h8.499 W
    30 BTU/h8.792 W
    31 BTU/h9.085 W
    32 BTU/h9.378 W
    33 BTU/h9.671 W
    34 BTU/h9.964 W
    35 BTU/h10.257 W
    36 BTU/h10.551 W
    37 BTU/h10.844 W
    38 BTU/h11.137 W
    39 BTU/h11.43 W
    40 BTU/h11.723 W
    41 BTU/h12.016 W
    42 BTU/h12.309 W
    43 BTU/h12.602 W
    44 BTU/h12.895 W
    45 BTU/h13.188 W
    46 BTU/h13.481 W
    47 BTU/h13.774 W
    48 BTU/h14.067 W
    49 BTU/h14.36 W
    50 BTU/h14.654 W
    51 BTU/h14.947 W
    52 BTU/h15.24 W
    53 BTU/h15.533 W
    54 BTU/h15.826 W
    55 BTU/h16.119 W
    56 BTU/h16.412 W
    57 BTU/h16.705 W
    58 BTU/h16.998 W
    59 BTU/h17.291 W
    60 BTU/h17.584 W
    61 BTU/h17.877 W
    62 BTU/h18.17 W
    63 BTU/h18.463 W
    64 BTU/h18.757 W
    65 BTU/h19.05 W
    66 BTU/h19.343 W
    67 BTU/h19.636 W
    68 BTU/h19.929 W
    69 BTU/h20.222 W
    70 BTU/h20.515 W
    71 BTU/h20.808 W
    72 BTU/h21.101 W
    73 BTU/h21.394 W
    74 BTU/h21.687 W
    75 BTU/h21.98 W
    76 BTU/h22.273 W
    77 BTU/h22.566 W
    78 BTU/h22.86 W
    79 BTU/h23.153 W
    80 BTU/h23.446 W
    81 BTU/h23.739 W
    82 BTU/h24.032 W
    83 BTU/h24.325 W
    84 BTU/h24.618 W
    85 BTU/h24.911 W
    86 BTU/h25.204 W
    87 BTU/h25.497 W
    88 BTU/h25.79 W
    89 BTU/h26.083 W
    90 BTU/h26.376 W
    91 BTU/h26.669 W
    92 BTU/h26.963 W
    93 BTU/h27.256 W
    94 BTU/h27.549 W
    95 BTU/h27.842 W
    96 BTU/h28.135 W
    97 BTU/h28.428 W
    98 BTU/h28.721 W
    99 BTU/h29.014 W
    100 BTU/h29.307 W

    Watts to BTU per hour

    WattsBTU per hour
    1 W3.412 BTU/h
    2 W6.824 BTU/h
    3 W10.236 BTU/h
    4 W13.649 BTU/h
    5 W17.061 BTU/h
    6 W20.473 BTU/h
    7 W23.885 BTU/h
    8 W27.297 BTU/h
    9 W30.709 BTU/h
    10 W34.121 BTU/h
    11 W37.534 BTU/h
    12 W40.946 BTU/h
    13 W44.358 BTU/h
    14 W47.77 BTU/h
    15 W51.182 BTU/h
    16 W54.594 BTU/h
    17 W58.006 BTU/h
    18 W61.419 BTU/h
    19 W64.831 BTU/h
    20 W68.243 BTU/h
    21 W71.655 BTU/h
    22 W75.067 BTU/h
    23 W78.479 BTU/h
    24 W81.891 BTU/h
    25 W85.304 BTU/h
    26 W88.716 BTU/h
    27 W92.128 BTU/h
    28 W95.54 BTU/h
    29 W98.952 BTU/h
    30 W102.364 BTU/h
    31 W105.776 BTU/h
    32 W109.189 BTU/h
    33 W112.601 BTU/h
    34 W116.013 BTU/h
    35 W119.425 BTU/h
    36 W122.837 BTU/h
    37 W126.249 BTU/h
    38 W129.661 BTU/h
    39 W133.074 BTU/h
    40 W136.486 BTU/h
    41 W139.898 BTU/h
    42 W143.31 BTU/h
    43 W146.722 BTU/h
    44 W150.134 BTU/h
    45 W153.546 BTU/h
    46 W156.959 BTU/h
    47 W160.371 BTU/h
    48 W163.783 BTU/h
    49 W167.195 BTU/h
    50 W170.607 BTU/h
    51 W174.019 BTU/h
    52 W177.431 BTU/h
    53 W180.844 BTU/h
    54 W184.256 BTU/h
    55 W187.668 BTU/h
    56 W191.08 BTU/h
    57 W194.492 BTU/h
    58 W197.904 BTU/h
    59 W201.316 BTU/h
    60 W204.728 BTU/h
    61 W208.141 BTU/h
    62 W211.553 BTU/h
    63 W214.965 BTU/h
    64 W218.377 BTU/h
    65 W221.789 BTU/h
    66 W225.201 BTU/h
    67 W228.613 BTU/h
    68 W232.026 BTU/h
    69 W235.438 BTU/h
    70 W238.85 BTU/h
    71 W242.262 BTU/h
    72 W245.674 BTU/h
    73 W249.086 BTU/h
    74 W252.498 BTU/h
    75 W255.911 BTU/h
    76 W259.323 BTU/h
    77 W262.735 BTU/h
    78 W266.147 BTU/h
    79 W269.559 BTU/h
    80 W272.971 BTU/h
    81 W276.383 BTU/h
    82 W279.796 BTU/h
    83 W283.208 BTU/h
    84 W286.62 BTU/h
    85 W290.032 BTU/h
    86 W293.444 BTU/h
    87 W296.856 BTU/h
    88 W300.268 BTU/h
    89 W303.681 BTU/h
    90 W307.093 BTU/h
    91 W310.505 BTU/h
    92 W313.917 BTU/h
    93 W317.329 BTU/h
    94 W320.741 BTU/h
    95 W324.153 BTU/h
    96 W327.566 BTU/h
    97 W330.978 BTU/h
    98 W334.39 BTU/h
    99 W337.802 BTU/h
    100 W341.214 BTU/h

    Common values

    BTU per hourWattsExample
    5,000 BTU/h1,465.36 WSmall window AC
    6,000 BTU/h1,758.43 W6,000 BTU
    8,000 BTU/h2,344.57 W8,000 BTU
    10,000 BTU/h2,930.71 W10,000 BTU
    12,000 BTU/h3,516.85 W1 ton of cooling
    18,000 BTU/h5,275.28 W1.5 tons
    24,000 BTU/h7,033.71 W2 tons
    36,000 BTU/h10,550.56 W3 tons
    60,000 BTU/h17,584.26 W5 tons

    About BTU per hour and watts

    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.

    Watts (W). The watt is the SI unit of power: one joule per second.

    Frequently asked questions

    1 BTU per hour equals how many watts?

    One BTU per hour equals 0.293071 watts. Looking at it the other way, one watt is 3.41214 BTU per hour.

    How do you convert BTU per hour to watts?

    Divide the number of BTU per hour by 3.412141633. For example, 12,000 BTU/h ÷ 3.412141633 = 3,516.85 W.

    What is 18,000 BTU per hour in watts?

    18,000 BTU/h is 5,275.28 W (1.5 tons).

    How much is 36,000 BTU per hour in watts?

    36,000 BTU per hour equals 10,550.6 watts.

    How do I convert watts back to BTU per hour?

    Multiply by 3.412141633, or press the ⇄ swap button above. For example, 5,275.28 W × 3.412141633 = 18,000 BTU/h.

    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).

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