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Mass Flow Rate

lb/stot/day

Convert pounds per second (lb/s) to metric tonnes per day (t/day).

Factor1 lb/s = 39.19038 t/day

Converter

lb/s

Accepts numbers or expressions, e.g. 150 + 14.7

Result
39.1904t/day

Rendered to 6 significant figures.

Formula

Formula
t/day = lb/s × 39.19038

Multiply any value in pounds per second by 39.19038 to obtain the value in metric tonnes per day.

Worked example

Convert 1 lb/s to t/day.

  1. 01Start with 1 lb/s.
  2. 02Multiply by the conversion factor: 1 × 39.19038 = 39.1904 t/day.
Result1 lb/s = 39.1904 t/day

Conversion table

lb/st/day
139.19
278.381
5195.95
10391.9
20783.81
501959.5
1003919
2007838.1
50019595
100039190

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/s to t/day?
1 lb/s equals 39.19038 t/day. To convert, multiply the value in pounds per second by 39.19038.
How do I convert 1 lb/s to t/day?
1 lb/s = 39.1904 t/day. For any value, multiply by 39.19038.
How do I convert t/day back to lb/s?
Divide by the same factor — or equivalently, multiply by 0.02551647. So 1 t/day = 0.0255165 lb/s.
When would I need to convert pound per second to metric tonne per day?
Mass flow conversions between lb/s and t/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).

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