Mass Flow Rate
lb/daytolb/s
Convert pounds per day (lb/day) to pounds per second (lb/s).
Factor1 lb/day = 1.157407e-5 lb/s
Converter
lb/day
Accepts numbers or expressions, e.g. 150 + 14.7
Result
lb/s
Rendered to 6 significant figures.
Formula
Formula
lb/s = lb/day × 1.157407e-5
Multiply any value in pounds per day by 1.157407e-5 to obtain the value in pounds per second.
Worked example
Convert 100000 lb/day to lb/s.
- 01Start with 100000 lb/day.
- 02Multiply by the conversion factor: 100000 × 1.157407e-5 = 1.15741 lb/s.
Result100000 lb/day = 1.15741 lb/s
Conversion table
| lb/day | lb/s |
|---|---|
| 1 | 1.1574e-5 |
| 2 | 2.3148e-5 |
| 5 | 5.787e-5 |
| 10 | 0.00011574 |
| 20 | 0.00023148 |
| 50 | 0.0005787 |
| 100 | 0.0011574 |
| 200 | 0.0023148 |
| 500 | 0.005787 |
| 1000 | 0.011574 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lb/day to lb/s?
1 lb/day equals 1.157407e-5 lb/s. To convert, multiply the value in pounds per day by 1.157407e-5.
How do I convert 1 lb/day to lb/s?
1 lb/day = 1.15741e-5 lb/s. For any value, multiply by 1.157407e-5.
How do I convert lb/s back to lb/day?
Divide by the same factor — or equivalently, multiply by 86400. So 1 lb/s = 86400 lb/day.
When would I need to convert pound per day to pound per second?
Mass flow conversions between lb/day and lb/s 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).