Horsepower (mechanical) to BTU per Hour (IT) Converter
Power · unit-converter
Convert Horsepower (mechanical) to BTU per Hour (IT) 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: Horsepower (mechanical) (hp)
To: BTU per Hour (IT) (btu_hr)
About Horsepower (mechanical)
Mechanical horsepower here is the US definition: 550 ft·lbf/s ≈ 745.70 W. Automotive and industrial specs often cite 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.
How to convert horsepower (mechanical, 550 ft·lb/s) to btu per hour (it)
1 horsepower (mechanical) is equal to 2544.43357764402435 btu per hour (it) when both are expressed in watt-equivalents:
1 hp = (745.6998715822702 W ÷ 0.2930710701722222 W) btu_hr = 2544.43357764402435 btu_hr
Each horsepower (mechanical) is defined as 745.6998715822702 W and each btu per hour (it) as 0.2930710701722222 W in this tool, so one hp equals 745.6998715822702 ÷ 0.2930710701722222 btu_hr = 2544.43357764402435 btu_hr.
Let d(hp) be the numeric value in Horsepower (mechanical) (hp), and d(btu_hr) the value in BTU per Hour (IT) (btu_hr). Then:
d(btu_hr) = d(hp) × (745.6998715822702 / 0.2930710701722222)
Equivalently, divide by how many hp fit into one btu_hr (watts per btu_hr divided by watts per hp):
d(btu_hr) = d(hp) ÷ 0.00039301477892
Or: btu per hour (it) = horsepower (mechanical) ÷ 0.00039301477892
Examples
Example #1: Convert 1 hp to btu per hour (it)
1 hp = 1 hp × (745.6998715822702/0.2930710701722222) btu_hr = 2544.43357764 btu_hr
1 hp = 1 hp ÷ 0.00039301477892 = 2544.43357764 btu_hr
Intermediate watts: 745.699871582 W
Example #2: Convert 10 hp to btu per hour (it)
10 hp = 10 hp × (745.6998715822702/0.2930710701722222) btu_hr = 25444.3357764 btu_hr
10 hp = 10 hp ÷ 0.00039301477892 = 25444.3357764 btu_hr
Intermediate watts: 7,456.99871582 W
Summary
To convert Horsepower (mechanical) to BTU per Hour (IT), multiply the value in hp by the ratio of watts per hp divided by watts per btu_hr. Equivalently: value_btu_hr = value_hp × (745.6998715822702 / 0.2930710701722222). Numerically, 1 hp equals 2544.4335776440244 btu_hr.
Relationship context
You are converting between mechanical power (horsepower, ft·lb/s) (Horsepower (mechanical, 550 ft·lb/s)) and thermal engineering rates (BTU/h, kcal/h) (BTU per Hour (IT)). All linear values are mapped through watts first. The numeric factor is 2.544434e+3.
Conversion tables
| Horsepower (mechanical) (hp) | BTU per Hour (IT) (btu_hr) |
|---|---|
| 0.1 | 254.443357764 |
| 1 | 2,544.43357764 |
| 2 | 5,088.86715529 |
| 3 | 7,633.30073293 |
| 4 | 10,177.7343106 |
| 5 | 12,722.1678882 |
| 6 | 15,266.6014659 |
| 7 | 17,811.0350435 |
| 8 | 20,355.4686212 |
| 9 | 22,899.9021988 |
| Horsepower (mechanical) (hp) | BTU per Hour (IT) (btu_hr) |
|---|---|
| 10 | 25,444.3357764 |
| 20 | 50,888.6715529 |
| 30 | 76,333.0073293 |
| 40 | 101,777.343106 |
| 50 | 127,221.678882 |
| 60 | 152,666.014659 |
| 70 | 178,110.350435 |
| 80 | 203,554.686212 |
| 90 | 228,999.021988 |
| 100 | 254,443.357764 |