Metric horsepower.
Metric horsepowers to Ton of refrigerations Converter — PS to TR
Convert Metric horsepower (PS) to Ton of refrigeration (TR) using the exact conversion factor (1 metric horsepower = 0.2091354922 ton of refrigeration). See the formula, worked examples, conversion table, history, and common uses.
Metric horsepowers to Ton of refrigerations converter
Converter
Power Converter
Convert watts, horsepower, refrigeration tons, BTU per hour, and engineering power units.
Context values
Some unit families need one extra value for a physically accurate result.
Cooling power equal to 12,000 BTU/h.
Result = input x 735.49875 / 3516.852842.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Metric horsepowers to Ton of refrigerations
Metric horsepower and Ton of refrigeration both describe power output, and the conversion is a routine part of comparing an engine or motor's spec sheet across countries that use different power units. Metric horsepower is most often used for european and japanese vehicle engine power ratings (often shown as ps or cv).
Formula
ton of refrigerations = metric horsepowers × 0.209135492166
This factor comes from each unit's defined relationship to the category's base unit: 1 metric horsepower equals 735.49875 base units, and 1 ton of refrigeration equals 3516.85284207 base units, so dividing one by the other gives the direct metric horsepower-to-ton of refrigeration factor of 0.209135492166.
Simple example
1 PS × 0.2091354922 = 0.2091354922 TR
1 metric horsepower = 0.2091354922 ton of refrigerations.
Real-world example
100 PS × 0.2091354922 = 20.91354922 TR
100 metric horsepowers = 20.91354922 ton of refrigerations.
Conversion table
| Metric horsepower (PS) | Ton of refrigeration (TR) |
|---|---|
| 1 PS | 0.2091354922 TR |
| 10 PS | 2.091354922 TR |
| 100 PS | 20.91354922 TR |
| 500 PS | 104.5677461 TR |
| 1,000 PS | 209.1354922 TR |
| 5,000 PS | 1,045.677461 TR |
Reverse conversion: Ton of refrigeration to Metric horsepower
0.2091354922 TR × 4.781589149 = 1 PS
0.2091354922 ton of refrigerations = 1 metric horsepowers.
metric horsepowers = ton of refrigerations × 4.78158914895
For a page dedicated to this direction, see Ton of refrigeration to Metric horsepower.
Understanding the Metric horsepower
Metric horsepower (PS) measures power. Metric horsepower (PS/CV) is defined as exactly 735.49875 watts, the power to raise 75 kilograms one meter per second. It is classified as a Non-SI unit (metric, automotive).
Where it's used: Continental Europe, Japan, and other metric-system automotive markets
Uses of the Metric horsepower today
- European and Japanese vehicle engine power ratings (often shown as PS or CV)
- Motor and machinery power specifications in metric countries
History of the Metric horsepower
Metric horsepower emerged in continental Europe in the 19th century as engineers sought a metric-system analog to Watt's English horsepower, defining it via a round figure (75 kgf·m/s) convenient in metric calculations. It remains the standard automotive power unit across much of Europe and Asia, labeled PS (German 'Pferdestärke') or CV (French/Italian 'cheval-vapeur').
Historical origin. Metric horsepower was not the invention of a single named person; it developed through the process described above.
Understanding the Ton of refrigeration (TR)
Cooling power equal to 12,000 BTU/h.
Metric horsepower — sources
- NIST Special Publication 811 — Documents the exact watt-equivalence of metric horsepower.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many ton of refrigerations are in 1 metric horsepower?
1 metric horsepower equals 0.2091354922 ton of refrigerations, using the exact defined conversion factor rather than an estimate.
How do I convert metric horsepower to ton of refrigeration?
Multiply the metric horsepower value by 0.2091354922. The converter above does this instantly to whatever precision you set.
How do I convert ton of refrigeration back to metric horsepower?
Use the reverse factor: 1 ton of refrigeration equals 4.781589149 metric horsepowers. You can also use the swap control in the converter above to flip the direction instantly.
What is a metric horsepower?
Metric horsepower (PS) measures power. Metric horsepower (PS/CV) is defined as exactly 735.49875 watts, the power to raise 75 kilograms one meter per second. It is classified as a Non-SI unit (metric, automotive).
What is a ton of refrigeration?
Ton of refrigeration (TR) is a unit of power.
Is the metric horsepower to ton of refrigeration conversion exact?
Yes. Metric horsepower (PS/CV) is defined as exactly 735.49875 watts, the power to raise 75 kilograms one meter per second. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the metric horsepower still used today?
Continental Europe, Japan, and other metric-system automotive markets