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Convert BTU per hour to watts (BTU/h to W)

Type a value in BTU per hour or in watts: the other field updates as you type. Below you will find the formula, a worked example and a BTU/h to W chart.

Updated on

1 BTU/h = 0.293071 W

How to convert BTU per hour to watts

Formula: W = BTU/h × 0.293071

Worked example: 12,000 BTU/h → 12,000 × 0.293071 = 3,516.85 W

Divide BTU per hour by 3.412 to get watts. A 12,000 BTU/h air conditioner moves about 3,517 W of heat; its electric draw is much lower, often 1,000 to 1,200 W.

BTU per hour to watts conversion chart

BTU per hour (BTU/h)Watts (W)
5,000 BTU/h1,465.36 W
6,000 BTU/h1,758.43 W
8,000 BTU/h2,344.57 W
9,000 BTU/h2,637.64 W
10,000 BTU/h2,930.71 W
12,000 BTU/h3,516.85 W
15,000 BTU/h4,396.07 W
18,000 BTU/h5,275.28 W
24,000 BTU/h7,033.71 W
30,000 BTU/h8,792.13 W
36,000 BTU/h10,550.6 W
48,000 BTU/h14,067.4 W
60,000 BTU/h17,584.3 W

What is one BTU per hour?

BTU per hour is the US unit for heating and cooling capacity, about 0.293 watt. Window air conditioners range from 5,000 to 15,000 BTU/h, and the label often drops the per hour and simply says BTU.

What is a watt?

The watt is the SI unit of power: one joule of energy per second. Light bulbs, chargers and small appliances are rated in watts; an LED bulb draws about 9 W and a hair dryer up to 1,800 W.

Frequently asked questions

How many watts are in one BTU per hour?

One BTU per hour equals 0.293071 watts. To convert any value, multiply the number of BTU per hour by 0.293071.

How do you convert BTU per hour to watts?

Use the formula W = BTU/h × 0.293071. Example: 12,000 BTU/h → 12,000 × 0.293071 = 3,516.85 W.

How many BTU per hour are in a watt?

A watt equals 3.41214 BTU per hour. That is the reverse conversion, from watts to BTU per hour.

Results are rounded to 6 significant digits; the conversion factors are the exact legal definitions.

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