BTU per Hour (IT) to Horsepower (mechanical) Converter
Power · unit-converter
Convert BTU per Hour (IT) to Horsepower (mechanical) with a fixed input and output unit, step-by-step formula line, and reference tables. Linear units use SI watt definitions; mechanical hp uses 550 ft·lbf/s; BTU/h uses the IT BTU; dBm/dBW are logarithmic relative to 1 mW and 1 W. The full Power Converter also includes PS/CV, TR, kVA/MVA, and ft·lb/s.
Calculator
From: BTU per Hour (IT) (btu_hr)
To: Horsepower (mechanical) (hp)
About BTU per Hour (IT)
BTU per hour expresses thermal power using the IT British thermal unit (≈ 1,055.056 J per BTU), divided by one hour. Common in HVAC equipment ratings.
About Horsepower (mechanical)
Mechanical horsepower here is the US definition: 550 ft·lbf/s ≈ 745.70 W. Automotive and industrial specs often cite hp.
How to convert btu per hour (it) to horsepower (mechanical, 550 ft·lb/s)
1 btu per hour (it) is equal to 0.00039301477892 horsepower (mechanical) when both are expressed in watt-equivalents:
1 btu_hr = (0.2930710701722222 W ÷ 745.6998715822702 W) hp = 0.00039301477892 hp
Each btu per hour (it) is defined as 0.2930710701722222 W and each horsepower (mechanical) as 745.6998715822702 W in this tool, so one btu_hr equals 0.2930710701722222 ÷ 745.6998715822702 hp = 0.00039301477892 hp.
Let d(btu_hr) be the numeric value in BTU per Hour (IT) (btu_hr), and d(hp) the value in Horsepower (mechanical) (hp). Then:
d(hp) = d(btu_hr) × (0.2930710701722222 / 745.6998715822702)
Equivalently, divide by how many btu_hr fit into one hp (watts per hp divided by watts per btu_hr):
d(hp) = d(btu_hr) ÷ 2544.43357764402435
Or: horsepower (mechanical) = btu per hour (it) ÷ 2544.43357764402435
Examples
Example #1: Convert 1 btu_hr to horsepower (mechanical)
1 btu_hr = 1 btu_hr × (0.2930710701722222/745.6998715822702) hp = 0.0003930148 hp
1 btu_hr = 1 btu_hr ÷ 2544.43357764402435 = 0.0003930148 hp
Intermediate watts: 0.2930710702 W
Example #2: Convert 10 btu_hr to horsepower (mechanical)
10 btu_hr = 10 btu_hr × (0.2930710701722222/745.6998715822702) hp = 0.0039301478 hp
10 btu_hr = 10 btu_hr ÷ 2544.43357764402435 = 0.0039301478 hp
Intermediate watts: 2.9307107017 W
Summary
To convert BTU per Hour (IT) to Horsepower (mechanical), multiply the value in btu_hr by the ratio of watts per btu_hr divided by watts per hp. Equivalently: value_hp = value_btu_hr × (0.2930710701722222 / 745.6998715822702). Numerically, 1 btu_hr equals 0.0003930147789222045 hp.
Relationship context
You are converting between thermal engineering rates (BTU/h, kcal/h) (BTU per Hour (IT)) and mechanical power (horsepower, ft·lb/s) (Horsepower (mechanical, 550 ft·lb/s)). All linear values are mapped through watts first. The numeric factor is 3.930148e-4.
Conversion tables
| BTU per Hour (IT) (btu_hr) | Horsepower (mechanical) (hp) |
|---|---|
| 0.1 | 0.0000393015 |
| 1 | 0.0003930148 |
| 2 | 0.0007860296 |
| 3 | 0.0011790443 |
| 4 | 0.0015720591 |
| 5 | 0.0019650739 |
| 6 | 0.0023580887 |
| 7 | 0.0027511035 |
| 8 | 0.0031441182 |
| 9 | 0.003537133 |
| BTU per Hour (IT) (btu_hr) | Horsepower (mechanical) (hp) |
|---|---|
| 10 | 0.0039301478 |
| 20 | 0.0078602956 |
| 30 | 0.0117904434 |
| 40 | 0.0157205912 |
| 50 | 0.0196507389 |
| 60 | 0.0235808867 |
| 70 | 0.0275110345 |
| 80 | 0.0314411823 |
| 90 | 0.0353713301 |
| 100 | 0.0393014779 |