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Mass Flow Rate

lb/hrtokg/s

Convert pounds per hour (lb/hr) to kilograms per second (kg/s).

Factor1 lb/hr = 0.0001259979 kg/s

Converter

lb/hr

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

Result
1.25998kg/s

Rendered to 6 significant figures.

Formula

Formula
kg/s = lb/hr × 0.0001259979

Multiply any value in pounds per hour by 0.0001259979 to obtain the value in kilograms per second.

Worked example

Convert 10000 lb/hr to kg/s.

  1. 01Start with 10000 lb/hr.
  2. 02Multiply by the conversion factor: 10000 × 0.0001259979 = 1.25998 kg/s.
Result10000 lb/hr = 1.25998 kg/s

Conversion table

lb/hrkg/s
10.000126
20.000252
50.00062999
100.00126
200.00252
500.0062999
1000.0126
2000.0252
5000.062999
10000.126

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/hr to kg/s?
1 lb/hr equals 0.0001259979 kg/s. To convert, multiply the value in pounds per hour by 0.0001259979.
How do I convert 1 lb/hr to kg/s?
1 lb/hr = 0.000125998 kg/s. For any value, multiply by 0.0001259979.
How do I convert kg/s back to lb/hr?
Divide by the same factor — or equivalently, multiply by 7936.641. So 1 kg/s = 7936.64 lb/hr.
When would I need to convert pound per hour to kilogram per second?
Mass flow conversions between lb/hr and kg/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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