Mass Flow Rate
lb/stolb/hr
Convert pounds per second (lb/s) to pounds per hour (lb/hr).
Factor1 lb/s = 3600 lb/hr
Converter
lb/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lb/hr
Rendered to 6 significant figures.
Formula
Formula
lb/hr = lb/s × 3600
Multiply any value in pounds per second by 3600 to obtain the value in pounds per hour.
Worked example
Convert 1 lb/s to lb/hr.
- 01Start with 1 lb/s.
- 02Multiply by the conversion factor: 1 × 3600 = 3600 lb/hr.
Result1 lb/s = 3600 lb/hr
Conversion table
| lb/s | lb/hr |
|---|---|
| 1 | 3600 |
| 2 | 7200 |
| 5 | 18000 |
| 10 | 36000 |
| 20 | 72000 |
| 50 | 1.8000e+5 |
| 100 | 3.6000e+5 |
| 200 | 7.2000e+5 |
| 500 | 1.8000e+6 |
| 1000 | 3.6000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lb/s to lb/hr?
1 lb/s equals 3600 lb/hr. To convert, multiply the value in pounds per second by 3600.
How do I convert 1 lb/s to lb/hr?
1 lb/s = 3600 lb/hr. For any value, multiply by 3600.
How do I convert lb/hr back to lb/s?
Divide by the same factor — or equivalently, multiply by 0.0002777778. So 1 lb/hr = 0.000277778 lb/s.
When would I need to convert pound per second to pound per hour?
Mass flow conversions between lb/s and lb/hr are common in material balances, process stream summaries, bulk solids handling, custody transfer, and equipment sizing where kg/hr, t/hr, lb/hr, and lb/s may all appear in different datasheets or vendor documents.
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).