Convert BTU to Watts (BTU to Watts Easily)

Convert BTU to Watts (Calculator)

Sometimes it becomes necessary to convert BTU/hr to Watts. While there are several online calculators to do this formula for you it is always helpful to know and understand what the formula is and the relation between BTU/hr and Watts.

Since BTU/hr is the old non-SI system of measurement but is still in wide usage around the world it is important to understand how to convert them to Watts and back again.

What is a BTU/hr?

BTU stands for British Thermal Unit and one BTU is the amount of heat required to raise the temperature of one pound of water one degree Fahrenheit.

When used as a unit of measurement for the power of heating and cooling systems the technical unit of measurement is actually BTU/hr.

What is a Watt?

A watt is a unit of measurement for energy transfer and one Watt is defined as one joule per second. This is the standard unit of measurement for the transfer of power.

The Formula

1 BTU/hr = 0.2930710702 Watts

1 Watt = 3.4121416331 BTU/hr

To Convert From BTU/hr to Watts

BTU/hr x 0.2930710702 = Watts

To Covert From Watts to BTU/hr

Watts x 3.4121416331 = BTU/hr

How to do the Calculation

Simply use the above formulas and enter the number of BTU/hr or Watts that you want to be converted into the formula, do the math, and you’re all set.

Here are some examples:

To find out the Watts in 200 BTU/hr

200 BTU/hr x 0.2930710702 = 58.61421404 Watts

Answer: 58.614211404 Watts

To find out the BTU/hr in 200 Watts

200 Watts x 3.4121416331 = 682.42832662 BTU/hr

Answer: 682.42832662 BTU/hr


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While it may seem to be easier to do all your conversions using online converters it is just as fast if not faster to use the formulas above to calculate the values on your smartphone. Or if you are really ambitious to calculate it with paper and a pencil.

BTU to Watts

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