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Mass Flow Rate

lb/daytost/hr

Convert pounds per day (lb/day) to short tons per hour (st/hr).

Factor1 lb/day = 2.083333e-5 st/hr

Converter

lb/day

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

Result
2.08333st/hr

Rendered to 6 significant figures.

Formula

Formula
st/hr = lb/day × 2.083333e-5

Multiply any value in pounds per day by 2.083333e-5 to obtain the value in short tons per hour.

Worked example

Convert 100000 lb/day to st/hr.

  1. 01Start with 100000 lb/day.
  2. 02Multiply by the conversion factor: 100000 × 2.083333e-5 = 2.08333 st/hr.
Result100000 lb/day = 2.08333 st/hr

Conversion table

lb/dayst/hr
12.0833e-5
24.1667e-5
50.00010417
100.00020833
200.00041667
500.0010417
1000.0020833
2000.0041667
5000.010417
10000.020833

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/day to st/hr?
1 lb/day equals 2.083333e-5 st/hr. To convert, multiply the value in pounds per day by 2.083333e-5.
How do I convert 1 lb/day to st/hr?
1 lb/day = 2.08333e-5 st/hr. For any value, multiply by 2.083333e-5.
How do I convert st/hr back to lb/day?
Divide by the same factor — or equivalently, multiply by 48000. So 1 st/hr = 48000 lb/day.
When would I need to convert pound per day to short ton per hour?
Mass flow conversions between lb/day and st/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).

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