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Power and Energy

kcal/hrtoTR

Convert kilocalories per hour (kcal/hr) to tons of refrigeration (TR).

Factor1 kcal/hr = 0.0003306934 TR

Converter

kcal/hr

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

Result
3.30693TR

Rendered to 6 significant figures.

Formula

Formula
TR = kcal/hr × 0.0003306934

Multiply any value in kilocalories per hour by 0.0003306934 to obtain the value in tons of refrigeration.

Worked example

Convert 10000 kcal/hr to TR.

  1. 01Start with 10000 kcal/hr.
  2. 02Multiply by the conversion factor: 10000 × 0.0003306934 = 3.30693 TR.
Result10000 kcal/hr = 3.30693 TR

Conversion table

kcal/hrTR
10.00033069
20.00066139
50.0016535
100.0033069
200.0066139
500.016535
1000.033069
2000.066139
5000.16535
10000.33069

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kcal/hr to TR?
1 kcal/hr equals 0.0003306934 TR. To convert, multiply the value in kilocalories per hour by 0.0003306934.
How do I convert 1 kcal/hr to TR?
1 kcal/hr = 0.000330693 TR. For any value, multiply by 0.0003306934.
How do I convert TR back to kcal/hr?
Divide by the same factor — or equivalently, multiply by 3023.949. So 1 TR = 3023.95 kcal/hr.
When would I need to convert kilocalorie 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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