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Viscosity

kg/(m·s)tolb/(ft·s)

Convert kilograms per metre-second (kg/(m·s)) to pounds per foot-second (lb/(ft·s)).

Factor1 kg/(m·s) = 0.671969 lb/(ft·s)

Converter

kg/(m·s)

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

Result
6.71969lb/(ft·s)

Rendered to 6 significant figures.

Formula

Formula
lb/(ft·s) = kg/(m·s) × 0.671969

Multiply any value in kilograms per metre-second by 0.671969 to obtain the value in pounds per foot-second.

Worked example

Convert 10 kg/(m·s) to lb/(ft·s).

  1. 01Start with 10 kg/(m·s).
  2. 02Multiply by the conversion factor: 10 × 0.671969 = 6.71969 lb/(ft·s).
Result10 kg/(m·s) = 6.71969 lb/(ft·s)

Conversion table

kg/(m·s)lb/(ft·s)
10.67197
21.3439
53.3598
106.7197
2013.439
5033.598
10067.197
200134.39
500335.98
1000671.97

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from kg/(m·s) to lb/(ft·s)?
1 kg/(m·s) equals 0.671969 lb/(ft·s). To convert, multiply the value in kilograms per metre-second by 0.671969.
How do I convert 1 kg/(m·s) to lb/(ft·s)?
1 kg/(m·s) = 0.671969 lb/(ft·s). For any value, multiply by 0.671969.
How do I convert lb/(ft·s) back to kg/(m·s)?
Divide by the same factor — or equivalently, multiply by 1.488164. So 1 lb/(ft·s) = 1.48816 kg/(m·s).
When would I need to convert kilogram per metre-second to pound per foot-second?
Dynamic viscosity conversions between kg/(m·s) and lb/(ft·s) are common in fluid characterisation, pump and control valve sizing, pipeline pressure-drop calculations, and lubrication engineering. Centipoise (cP) and mPa·s are the most widely used units in process datasheets; Pa·s is required for most simulation tools.
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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