Power and Energy
J/stohp
Convert joules per second (J/s) to mechanical horsepower (hp).
Factor1 J/s = 0.001341022 hp
Converter
J/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
hp
Rendered to 6 significant figures.
Formula
Formula
hp = J/s × 0.001341022
Multiply any value in joules per second by 0.001341022 to obtain the value in mechanical horsepower.
Worked example
Convert 746 J/s to hp.
- 01Start with 746 J/s.
- 02Multiply by the conversion factor: 746 × 0.001341022 = 1.0004 hp.
Result746 J/s = 1.0004 hp
Conversion table
| J/s | hp |
|---|---|
| 1 | 0.001341 |
| 2 | 0.002682 |
| 5 | 0.0067051 |
| 10 | 0.01341 |
| 20 | 0.02682 |
| 50 | 0.067051 |
| 100 | 0.1341 |
| 200 | 0.2682 |
| 500 | 0.67051 |
| 1000 | 1.341 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from J/s to hp?
1 J/s equals 0.001341022 hp. To convert, multiply the value in joules per second by 0.001341022.
How do I convert 1 J/s to hp?
1 J/s = 0.00134102 hp. For any value, multiply by 0.001341022.
How do I convert hp back to J/s?
Divide by the same factor — or equivalently, multiply by 745.6999. So 1 hp = 745.7 J/s.
When would I need to convert joule per second to mechanical horsepower?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).