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Mass Flow Rate

kg/hrtomg/s

Convert kilograms per hour (kg/hr) to milligrams per second (mg/s).

Factor1 kg/hr = 277.7778 mg/s

Converter

kg/hr

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

Result
277.778mg/s

Rendered to 6 significant figures.

Formula

Formula
mg/s = kg/hr × 277.7778

Multiply any value in kilograms per hour by 277.7778 to obtain the value in milligrams per second.

Worked example

Convert 1 kg/hr to mg/s.

  1. 01Start with 1 kg/hr.
  2. 02Multiply by the conversion factor: 1 × 277.7778 = 277.778 mg/s.
Result1 kg/hr = 277.778 mg/s

Conversion table

kg/hrmg/s
1277.78
2555.56
51388.9
102777.8
205555.6
5013889
10027778
20055556
5001.3889e+5
10002.7778e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kg/hr to mg/s?
1 kg/hr equals 277.7778 mg/s. To convert, multiply the value in kilograms per hour by 277.7778.
How do I convert 1 kg/hr to mg/s?
1 kg/hr = 277.778 mg/s. For any value, multiply by 277.7778.
How do I convert mg/s back to kg/hr?
Divide by the same factor — or equivalently, multiply by 0.0036. So 1 mg/s = 0.0036 kg/hr.
When would I need to convert kilogram per hour to milligram per second?
Mass flow conversions between kg/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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