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Mass Flow Rate

st/daytolb/min

Convert short tons per day (st/day) to pounds per minute (lb/min).

Factor1 st/day = 1.388889 lb/min

Converter

st/day

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

Result
138.889lb/min

Rendered to 6 significant figures.

Formula

Formula
lb/min = st/day × 1.388889

Multiply any value in short tons per day by 1.388889 to obtain the value in pounds per minute.

Worked example

Convert 100 st/day to lb/min.

  1. 01Start with 100 st/day.
  2. 02Multiply by the conversion factor: 100 × 1.388889 = 138.889 lb/min.
Result100 st/day = 138.889 lb/min

Conversion table

st/daylb/min
11.3889
22.7778
56.9444
1013.889
2027.778
5069.444
100138.89
200277.78
500694.44
10001388.9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from st/day to lb/min?
1 st/day equals 1.388889 lb/min. To convert, multiply the value in short tons per day by 1.388889.
How do I convert 1 st/day to lb/min?
1 st/day = 1.38889 lb/min. For any value, multiply by 1.388889.
How do I convert lb/min back to st/day?
Divide by the same factor — or equivalently, multiply by 0.72. So 1 lb/min = 0.72 st/day.
When would I need to convert short ton per day to pound per minute?
Mass flow conversions between st/day and lb/min 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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