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Mass Flow Rate

st/hrtomg/s

Convert short tons per hour (st/hr) to milligrams per second (mg/s).

Factor1 st/hr = 251995.8 mg/s

Converter

st/hr

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

Result
251996mg/s

Rendered to 6 significant figures.

Formula

Formula
mg/s = st/hr × 251995.8

Multiply any value in short tons per hour by 251995.8 to obtain the value in milligrams per second.

Worked example

Convert 1 st/hr to mg/s.

  1. 01Start with 1 st/hr.
  2. 02Multiply by the conversion factor: 1 × 251995.8 = 251996 mg/s.
Result1 st/hr = 251996 mg/s

Conversion table

st/hrmg/s
12.5200e+5
25.0399e+5
51.2600e+6
102.5200e+6
205.0399e+6
501.26e+7
1002.52e+7
2005.0399e+7
5001.26e+8
10002.52e+8

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from st/hr to mg/s?
1 st/hr equals 251995.8 mg/s. To convert, multiply the value in short tons per hour by 251995.8.
How do I convert 1 st/hr to mg/s?
1 st/hr = 251996 mg/s. For any value, multiply by 251995.8.
How do I convert mg/s back to st/hr?
Divide by the same factor — or equivalently, multiply by 3.968321e-6. So 1 mg/s = 3.96832e-6 st/hr.
When would I need to convert short ton per hour to milligram per second?
Mass flow conversions between st/hr and mg/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).

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