Tons of refrigeration to horsepower
Type a value in tons of refrigeration to see it in horsepower 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 tons of refrigeration box.
- Read the result in horsepower as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
hp = TR × 4.716177347
Multiply the value in tons of refrigeration by 4.716177347 to get horsepower.
Example
To convert 25 TR to horsepower: 25 × 4.716177347 = 117.904 hp.
Conversion table
| Tons of refrigeration (TR) | Horsepower (hp) |
|---|---|
| 1 | 4.71618 |
| 2 | 9.43235 |
| 3 | 14.1485 |
| 5 | 23.5809 |
| 10 | 47.1618 |
| 20 | 94.3235 |
| 25 | 117.904 |
| 50 | 235.809 |
| 100 | 471.618 |
| 250 | 1,179.04 |
| 500 | 2,358.09 |
| 1,000 | 4,716.18 |
About the units
- 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.
- Horsepower
- Mechanical (imperial) horsepower is 550 foot-pounds-force per second, exactly 745.69987158227022 watts, the figure used in US car specifications.
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 horsepower are in one ton of refrigeration?
1 TR = 4.71618 hp exactly.
How do I convert tons of refrigeration to horsepower?
Use hp = TR × 4.716177347. For example, 25 TR = 117.904 hp.
How many tons of refrigeration are in one horsepower?
1 hp = 0.212036 TR.
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.