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Power and Energy

BTU/hrtoTR

Convert British thermal units per hour (BTU/hr) to tons of refrigeration (TR).

Factor1 BTU/hr = 8.333333e-5 TR

Converter

BTU/hr

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1TR

Rendered to 6 significant figures.

Formula

Formula
TR = BTU/hr × 8.333333e-5

Multiply any value in British thermal units per hour by 8.333333e-5 to obtain the value in tons of refrigeration.

Worked example

Convert 12000 BTU/hr to TR.

  1. 01Start with 12000 BTU/hr.
  2. 02Multiply by the conversion factor: 12000 × 8.333333e-5 = 1 TR.
Result12000 BTU/hr = 1 TR

Conversion table

BTU/hrTR
18.3333e-5
20.00016667
50.00041667
100.00083333
200.0016667
500.0041667
1000.0083333
2000.016667
5000.041667
10000.083333

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from BTU/hr to TR?
1 BTU/hr equals 8.333333e-5 TR. To convert, multiply the value in British thermal units per hour by 8.333333e-5.
How do I convert 1 BTU/hr to TR?
1 BTU/hr = 8.33333e-5 TR. For any value, multiply by 8.333333e-5.
How do I convert TR back to BTU/hr?
Divide by the same factor — or equivalently, multiply by 12000. So 1 TR = 12000 BTU/hr.
When would I need to convert British thermal unit per hour to ton of refrigeration?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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