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Mass Flow Rate

lb/hrtokg/hr

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

Factor1 lb/hr = 0.4535924 kg/hr

Converter

lb/hr

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

Result
453.592kg/hr

Rendered to 6 significant figures.

Formula

Formula
kg/hr = lb/hr × 0.4535924

Multiply any value in pounds per hour by 0.4535924 to obtain the value in kilograms per hour.

Worked example

Convert 1000 lb/hr to kg/hr.

  1. 01Start with 1000 lb/hr.
  2. 02Multiply by the conversion factor: 1000 × 0.4535924 = 453.592 kg/hr.
Result1000 lb/hr = 453.592 kg/hr

Conversion table

lb/hrkg/hr
10.45359
20.90718
52.268
104.5359
209.0718
5022.68
10045.359
20090.718
500226.8
1000453.59

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/hr to kg/hr?
1 lb/hr equals 0.4535924 kg/hr. To convert, multiply the value in pounds per hour by 0.4535924.
How do I convert 1 lb/hr to kg/hr?
1 lb/hr = 0.453592 kg/hr. For any value, multiply by 0.4535924.
How do I convert kg/hr back to lb/hr?
Divide by the same factor — or equivalently, multiply by 2.204623. So 1 kg/hr = 2.20462 lb/hr.
When would I need to convert pound per hour to kilogram per hour?
Mass flow conversions between lb/hr and kg/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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