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# Fire Pit Btu Calculator Online

A fire pit BTU (British Thermal Unit) calculator is a specialized tool designed to help you determine the BTU output required for your fire pit. BTU is a unit of measurement that represents the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. Knowing the BTU requirements of your fire pit can be critical when considering factors such as fuel efficiency, cost savings, and heating capacity.

## Working

The calculator’s main inputs are the fire pit’s diameter and the type of gas used (natural gas or propane), as these factors significantly influence the BTU output. The formula typically used in a fire pit BTU calculator is:

``````BTU Output = Fire Pit Diameter^2 x Fuel BTU Value
``````

To walk you through the process, let’s consider an example where the fire pit has a diameter of 3 feet, and we’re using propane as a fuel source.

1. First, square the diameter of the fire pit. In this case, it’s 3 feet, so squaring this gives us 9.
2. Next, consider the fuel’s BTU value. For propane, the BTU value is typically around 2500.
3. Now, multiply the square of the diameter by the fuel’s BTU value. In our example, 9 (diameter squared) x 2500 (BTU value) equals 22,500 BTUs.