BTU per hour to tons of refrigeration
Type a value in BTU per hour to see it in tons of refrigeration straight away, or type in the second box to convert back.
Loading the tool…
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 BTU per hour 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 = BTU/h × 0.00008333333333
Multiply the value in BTU per hour by 0.00008333333333 to get tons of refrigeration.
Example
To convert 25 BTU/h to tons of refrigeration: 25 × 0.00008333333333 = 0.00208333 TR.
Conversion table
| BTU per hour (BTU/h) | Tons of refrigeration (TR) |
|---|---|
| 1 | 0.0000833333 |
| 2 | 0.000166667 |
| 3 | 0.00025 |
| 5 | 0.000416667 |
| 10 | 0.000833333 |
| 20 | 0.00166667 |
| 25 | 0.00208333 |
| 50 | 0.00416667 |
| 100 | 0.00833333 |
| 250 | 0.0208333 |
| 500 | 0.0416667 |
| 1,000 | 0.0833333 |
About the units
- BTU per hour
- One BTU per hour is 1055.05585262 joules (International Table BTU) per 3600 seconds, about 0.293071 watts, the rating used for air conditioners.
- 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 BTU per hour?
1 BTU/h = 0.0000833333 TR exactly.
How do I convert BTU per hour to tons of refrigeration?
Use TR = BTU/h × 0.00008333333333. For example, 25 BTU/h = 0.00208333 TR.
How many BTU per hour are in one ton of refrigeration?
1 TR = 12,000 BTU/h.
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.