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Horsepower to Tons of Refrigeration Converter

Enter the power in horsepower below to convert it to tons of refrigeration.

Convert Horsepower (hp) to Tons of Refrigeration

Enter a value in horsepower (hp) (hp) to convert to tons of refrigeration (TR).

Result
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1.060180657tons of refrigeration
5 hp = 1.060180657 TR
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Reference:NIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))
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Horsepower to Ton of Refrigeration Conversion Table

Table showing various horsepower measurements converted to tons of refrigeration. Click any preset value or arrow to load it into the converter.

How to Convert Horsepower to Tons of Refrigeration

To convert horsepower to tons of refrigeration, multiply the power by the following conversion ratio: 0.2120361 tons of refrigeration/horsepower.

Since one horsepower is equal to 0.2120361 tons of refrigeration, you can use this simple formula to convert:

tons of refrigeration = horsepower × 0.2120361

The power in tons of refrigeration is equal to the power in horsepower multiplied by 0.2120361.

For example, here's how to convert 5 horsepower to tons of refrigeration using the formula above.

tons of refrigeration = (5 hp × 0.2120361) = 1.0601807 TR

How Many Tons of Refrigeration Are in a Horsepower?

There are 0.2120361 tons of refrigeration in a horsepower, which is why we use this value in the formula above.

1 hp = 0.2120361 TR|1 TR = 4.7161773 hp

Our horsepower to ton of refrigeration calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Horsepower and tons of refrigeration are both units used to measure power. Keep reading to learn more about each unit.

What Is a Horsepower?

A horsepower is a unit of power equal to 745.6998716 watts (W), the base unit for power. Imperial mechanical horsepower (550 ft·lbf/s ≈ 745.7 W). [1]

The horsepower is classified as a US customary and imperial unit of power. Horsepower can be abbreviated as hp; for example, 1 horsepower can be written as 1 hp.

When working with horsepower (hp) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, horsepower (hp) are widely used across standard power applications within US customary and imperial workflows, engineering documentation, and technical data sheets.

What Is a Ton of Refrigeration?

A ton of refrigeration is a unit of power equal to 3,516.8528421 watts (W), the base unit for power. HVAC cooling capacity equal to 12,000 BTU/hr or 3.51685 kW. [2]

The ton of refrigeration is classified as a US customary unit of power. Tons of Refrigeration can be abbreviated as TR; for example, 1 ton of refrigeration can be written as 1 TR.

When working with tons of refrigeration (TR) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, tons of refrigeration (TR) are widely used across large-scale industrial, bulk, and macro-level power specifications within US customary workflows, engineering documentation, and technical data sheets.

When converting power between horsepower (hp) and tons of refrigeration (TR), keep full floating-point precision (1 hp = 0.2120361 TR; 1 TR = 4.7161773 hp) during intermediate calculations and round only the final ton of refrigeration figure to match your instrument tolerance.

More Horsepower & Ton of Refrigeration Conversions

Need to calculate in the opposite direction? Use our tons of refrigeration to horsepower (hp) calculator to switch your starting unit immediately. You can also explore related tools such as converting tons of refrigeration to horsepower (hp), converting btu/hr to tons of refrigeration, or converting horsepower (hp) to watts.

Frequently Asked Questions

There are 0.21204 tons of refrigeration (TR) in 1 horsepower (hp). Conversely, 1 ton of refrigeration (TR) is equal to 4.71618 horsepower (hp).

References

NIST · BIPM · ISO
  1. [1]
    NIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Horsepower (hp) (hp) to Tons of Refrigeration (TR)
    NIST SP 811 Standard
  2. [2]
    NIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Horsepower (Mechanical) (hp) & Ton of Refrigeration (TR) (TR)
    NIST CUU Specification
  3. [3]
    BIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (hp to TR)
    BIPM Reference
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