Simple BTU to Watts calculator with formula, examples, and easy explanation. Convert BTU/hr to Watts instantly and understand how heating and cooling power ratings compare.
When you compare heating or cooling equipment, you will often see two different units: BTU/hr and Watts.
BTU/hr is common in HVAC systems, while Watts are standard in electrical ratings.
To compare these units correctly, you need a simple conversion formula.
This guide explains the formula, shows how the conversion works, and gives you an example you can follow.
What is BTU/hr?
BTU/hr (British Thermal Units per hour) measures heat energy. 1 BTU/hr means the system adds or removes one BTU of heat energy every hour.
What is a Watt?
A Watt measures power, or the rate at which energy is used. Electrical appliances typically list their power usage in Watts.
BTU to Watts Conversion Formula
The basic conversion is:
Formula:
Watts=BTU/hr×0.29307107
Watts to BTU/hr Conversion Formula (Reverse Conversion)
Sometimes you need the opposite conversion.
Formula
BTU/hr=0.29307107Watts
Why 0.29307107?
1 BTU/hr equals 0.29307107 Watts.
This is a fixed physical conversion factor between these units.
Example Calculation
Example:
Convert 12,000 BTU/hr (standard 1-ton AC) into Watts.
Step-by-step Formula
Watts=12000×0.29307107
Watts≈3516.85
Conclusion
A BTU to Watts calculator makes it easy to compare heating or cooling systems with electrical ratings.
Just enter the BTU/hr value, and the calculator instantly gives you the power in Watts.
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