Mass Flow Rate
lb/daytolb/hr
Convert pounds per day (lb/day) to pounds per hour (lb/hr).
Factor1 lb/day = 0.04166667 lb/hr
Converter
lb/day
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lb/hr
Rendered to 6 significant figures.
Formula
Formula
lb/hr = lb/day × 0.04166667
Multiply any value in pounds per day by 0.04166667 to obtain the value in pounds per hour.
Worked example
Convert 240 lb/day to lb/hr.
- 01Start with 240 lb/day.
- 02Multiply by the conversion factor: 240 × 0.04166667 = 10 lb/hr.
Result240 lb/day = 10 lb/hr
Conversion table
| lb/day | lb/hr |
|---|---|
| 1 | 0.041667 |
| 2 | 0.083333 |
| 5 | 0.20833 |
| 10 | 0.41667 |
| 20 | 0.83333 |
| 50 | 2.0833 |
| 100 | 4.1667 |
| 200 | 8.3333 |
| 500 | 20.833 |
| 1000 | 41.667 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lb/day to lb/hr?
1 lb/day equals 0.04166667 lb/hr. To convert, multiply the value in pounds per day by 0.04166667.
How do I convert 1 lb/day to lb/hr?
1 lb/day = 0.0416667 lb/hr. For any value, multiply by 0.04166667.
How do I convert lb/hr back to lb/day?
Divide by the same factor — or equivalently, multiply by 24. So 1 lb/hr = 24 lb/day.
When would I need to convert pound per day to pound per hour?
Mass flow conversions between lb/day 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).