Capacity conversion
Tons to BTU Calculator
Convert refrigeration tons to BTU/h and thermal kW for a capacity comparison.
Convert tons to BTU/h
Use a thermal refrigeration-ton rating.
How to use this converter
- Enter the equipment or planning value in refrigeration tons.
- Read the equivalent BTU/h and thermal kW.
- Check the original rating conditions before comparing equipment.
Formula
Thermal kW = BTU/h ÷ 3,412.141633
Variables and units
| Term | Meaning | Unit |
|---|---|---|
| RT | Conventional HVAC thermal-capacity rating | Refrigeration tons |
| BTU/h | Heat-transfer rate | British thermal units per hour |
| kW thermal | Equivalent rate in SI units | Kilowatts of thermal capacity |
Example
1.5 refrigeration tons × 12,000 = 18,000 BTU/h. The equivalent thermal rate is 5.276 kW. This is capacity conversion only; it is not 5.276 kW of electrical input.
Result interpretation
Use this result to read capacity labels in a common unit. A ton rating does not capture climate, building load, humidity, equipment performance, or duct conditions. Verify the actual space load before selecting equipment.
Convert after calculating the load
The HVAC Load Calculator provides a transparent preliminary component estimate. Then use this converter to express the resulting capacity in BTU/h.
Frequently asked questions
Is one HVAC ton a physical weight?
No. A refrigeration ton is a conventional thermal-capacity rate equal to 12,000 BTU/h.
Can I use tons to estimate electricity consumption?
No. Electrical consumption depends on the equipment’s efficiency and operating conditions. Use manufacturer input ratings for that question.
How many BTU/h is 2 tons?
2 × 12,000 = 24,000 BTU/h.