Horsepower to tons of refrigeration
Type a value in horsepower to see it in tons of refrigeration straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the horsepower box.
- Read the result in tons of refrigeration as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
TR = hp × 0.2120361315
Multiply the value in horsepower by 0.2120361315 to get tons of refrigeration.
Example
To convert 25 hp to tons of refrigeration: 25 × 0.2120361315 = 5.3009 TR.
Conversion table
| Horsepower (hp) | Tons of refrigeration (TR) |
|---|---|
| 1 | 0.212036 |
| 2 | 0.424072 |
| 3 | 0.636108 |
| 5 | 1.06018 |
| 10 | 2.12036 |
| 20 | 4.24072 |
| 25 | 5.3009 |
| 50 | 10.6018 |
| 100 | 21.2036 |
| 250 | 53.009 |
| 500 | 106.018 |
| 1,000 | 212.036 |
About the units
- Horsepower
- Mechanical (imperial) horsepower is 550 foot-pounds-force per second, exactly 745.69987158227022 watts, the figure used in US car specifications.
- Ton of refrigeration
- A ton of refrigeration is exactly 12000 BTU per hour, about 3516.85 watts, used to rate central air conditioning and chillers.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many tons of refrigeration are in one horsepower?
1 hp = 0.212036 TR exactly.
How do I convert horsepower to tons of refrigeration?
Use TR = hp × 0.2120361315. For example, 25 hp = 5.3009 TR.
How many horsepower are in one ton of refrigeration?
1 TR = 4.71618 hp.
What is the difference between mechanical and metric horsepower?
Mechanical horsepower is about 745.7 watts and is used in the US, while metric horsepower (PS) is 735.5 watts and is used in Europe and Japan. The same engine therefore shows a PS figure about 1.4% higher.
How many kilowatts is one ton of refrigeration?
One ton of refrigeration is 12000 BTU per hour, about 3.517 kW of cooling capacity. That is cooling output, not electricity use; the unit draws less power depending on its efficiency.