BTU (British Thermal Unit) Calculator

Use our online free British Thermal Unit(BTU) calculator tool that helps you to estimate the total amount of heat produced in a room easily in a fraction of seconds. All you need to do is give the inputs in the input fields and click on the calculate button. As this calculator is user-friendly, so you can use it anywhere.

BTU (British Thermal Unit) Calculator: Need help to find BTU(British Thermal Unit)? If so, this is the right tool and you are on the right page. This calculator tool will give you accurate answers easily in seconds. In this calculator, we will give you everything along with the units. Just by giving input and by clicking on the calculate button you will get instant answers. And we will provide a complete concept along with the calculator. 

What is BTU(British Thermal Unit)?

British Thermal Unit is an estimation of the amount of energy required to heat 1lb of water from 39°F to 40°F and is roughly equal to 1.055 joules. A single BTU is more or less equal to the amount of energy produced by burning a single wooden match from end to end. 1 watt is approximately  3.412 BTU per hour. For example, natural gas to oil is one of the most popular BTU.

BTU = Temperature Rise (∆ T) x CFM x 1.08.


How is Your Room BTU Requirement Calculated?

  • A room’s BTU condition is based upon the cubic volume of the space,  the height, length, and width of the room will be multiplied by four and what is above, below, and beside the room.
  • Now, we can determine the expected heat loss for your room and provide you with a BTU output to heat the space efficiently by which we mean to a comfortable temperature and at the lowest possible fuel costs you.
  • Finally, after all this, you will get the total heat produced in the room.

FAQs on British Thermal Unit Calculator

1. How to calculate the temperature from BTU?

To calculate the temperature from BTU, BTU = Temperature Rise (∆ T) x CFM x 1.08.


2. What units are BTU?

BTU is a measure of the heat content of fuels and energy sources. Units of BTU are BTU or watt.


3. Which calculator tool is best to calculate the room temperature?

BTU (British Thermal Unit) calculator tool is best to calculate the room temperature.