Enter the amount of BTUs into the calculator to determine the tonnage (cooling capacity) in tons, or enter the tonnage to calculate the amount of BTUs.

Btu To Tonnage Formula

The following formula is used to calculate the tonnage (cooling capacity) in tons based on the amount of BTUs (British Thermal Units):

Tonnage = BTUs / 12000


  • Tonnage is the cooling capacity in tons
  • BTUs is the amount of British Thermal Units

To calculate the tonnage, divide the amount of BTUs by 12000.

What is a Btu To Tonnage?

BTU (British Thermal Unit) and tonnage are both units of measurement used in the heating and cooling industry. BTU is a unit of heat energy, it is the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit. On the other hand, tonnage is a measure of an air conditioner’s cooling capacity. One ton of cooling is equivalent to 12,000 BTUs per hour. Therefore, the conversion from BTU to tonnage involves dividing the number of BTUs by 12,000. For example, an air conditioner with a cooling capacity of 24,000 BTUs would be equivalent to a 2-ton unit. This conversion is important in the HVAC industry to ensure that the correct size of air conditioning or heating unit is installed in a building. Too large a unit can result in inefficient operation and wasted energy, while too small a unit may not adequately cool or heat the space.

How to Calculate Btu To Tonnage?

The following steps outline how to calculate the Btu to Tonnage conversion.

  1. First, determine the Btu value.
  2. Next, divide the Btu value by 12,000 to convert it to tons.
  3. Finally, calculate the Tonnage.
  4. After inserting the Btu value and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge.

Btu value = 36,000