Mass Flow Rate
lb/stokg/day
Convert pounds per second (lb/s) to kilograms per day (kg/day).
Factor1 lb/s = 39190.38 kg/day
Converter
lb/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kg/day
Rendered to 6 significant figures.
Formula
Formula
kg/day = lb/s × 39190.38
Multiply any value in pounds per second by 39190.38 to obtain the value in kilograms per day.
Worked example
Convert 1 lb/s to kg/day.
- 01Start with 1 lb/s.
- 02Multiply by the conversion factor: 1 × 39190.38 = 39190.4 kg/day.
Result1 lb/s = 39190.4 kg/day
Conversion table
| lb/s | kg/day |
|---|---|
| 1 | 39190 |
| 2 | 78381 |
| 5 | 1.9595e+5 |
| 10 | 3.9190e+5 |
| 20 | 7.8381e+5 |
| 50 | 1.9595e+6 |
| 100 | 3.9190e+6 |
| 200 | 7.8381e+6 |
| 500 | 1.9595e+7 |
| 1000 | 3.919e+7 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from lb/s to kg/day?
1 lb/s equals 39190.38 kg/day. To convert, multiply the value in pounds per second by 39190.38.
How do I convert 1 lb/s to kg/day?
1 lb/s = 39190.4 kg/day. For any value, multiply by 39190.38.
How do I convert kg/day back to lb/s?
Divide by the same factor — or equivalently, multiply by 2.551647e-5. So 1 kg/day = 2.55165e-5 lb/s.
When would I need to convert pound per second to kilogram per day?
Mass flow conversions between lb/s and kg/day 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).