Horsepower to BTU/hr Converter
Enter the power in horsepower below to convert it to btu/hr.
Convert Horsepower (hp) to BTU/hr
Enter a value in horsepower (hp) (hp) to convert to btu/hr (BTU/hr).
Horsepower to BTU per Hour Conversion Table
Table showing various horsepower measurements converted to btu/hr. Click any preset value or arrow to load it into the converter.
| Horsepower (hp) (hp) | BTU/hr (BTU/hr) |
|---|---|
| 1 hp | 2,544.4335791 BTU/hr |
| 2 hp | 5,088.8671583 BTU/hr |
| 2.5 hp | 6,361.0839478 BTU/hr |
| 5 hp | 12,722.1678957 BTU/hr |
| 10 hp | 25,444.3357914 BTU/hr |
| 15 hp | 38,166.5036871 BTU/hr |
| 20 hp | 50,888.6715828 BTU/hr |
| 25 hp | 63,610.8394785 BTU/hr |
| 30 hp | 76,333.0073742 BTU/hr |
| 50 hp | 127,221.678957 BTU/hr |
How to Convert Horsepower to BTU/hr
To convert horsepower to btu/hr, multiply the power by the following conversion ratio: 2,544.4335791 btu/hr/horsepower.
Since one horsepower is equal to 2,544.4335791 btu/hr, you can use this simple formula to convert:
The power in btu/hr is equal to the power in horsepower multiplied by 2,544.4335791.
For example, here's how to convert 5 horsepower to btu/hr using the formula above.
How Many BTU/hr Are in a Horsepower?
There are 2,544.4335791 btu/hr in a horsepower, which is why we use this value in the formula above.
Our horsepower to btu per hour calculator automatically converts your power measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Horsepower and btu/hr 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 BTU per Hour?
A btu per hour is a unit of power equal to 0.2930711 watts (W), the base unit for power. HVAC thermal rate (1 W ≈ 3.41214 BTU/hr). [2]
The btu per hour is classified as a US customary and imperial unit of power. BTU/hr can be abbreviated as BTU/hr; for example, 1 btu per hour can be written as 1 BTU/hr.
When working with btu/hr (BTU/hr) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, btu/hr (BTU/hr) are widely used across standard power applications within US customary and imperial workflows, engineering documentation, and technical data sheets.
When converting power between horsepower (hp) and btu/hr (BTU/hr), keep full floating-point precision (1 hp = 2,544.4335791 BTU/hr; 1 BTU/hr = 0.000393015 hp) during intermediate calculations and round only the final btu per hour figure to match your instrument tolerance.
More Horsepower & BTU per Hour Conversions
Need to calculate in the opposite direction? Use our btu/hr to horsepower (hp) calculator to switch your starting unit immediately. You can also explore related tools such as converting btu/hr to horsepower (hp), converting tons of refrigeration to btu/hr, or converting horsepower (hp) to watts.
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Power & Radiant Flux))·Power Metrology Standard — Horsepower (hp) (hp) to BTU/hr (BTU/hr)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Watt (W))·Unit Specifications: Horsepower (Mechanical) (hp) & BTU per Hour (BTU/hr)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Power)·Conversion Factors & Mathematical Basis (hp to BTU/hr)