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Viscosity

lb/(ft·s)tokg/(m·s)

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

Factor1 lb/(ft·s) = 1.488164 kg/(m·s)

Converter

lb/(ft·s)

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

Result
1.48816kg/(m·s)

Rendered to 6 significant figures.

Formula

Formula
kg/(m·s) = lb/(ft·s) × 1.488164

Multiply any value in pounds per foot-second by 1.488164 to obtain the value in kilograms per metre-second.

Worked example

Convert 1 lb/(ft·s) to kg/(m·s).

  1. 01Start with 1 lb/(ft·s).
  2. 02Multiply by the conversion factor: 1 × 1.488164 = 1.48816 kg/(m·s).
Result1 lb/(ft·s) = 1.48816 kg/(m·s)

Conversion table

lb/(ft·s)kg/(m·s)
11.4882
22.9763
57.4408
1014.882
2029.763
5074.408
100148.82
200297.63
500744.08
10001488.2

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lb/(ft·s) to kg/(m·s)?
1 lb/(ft·s) equals 1.488164 kg/(m·s). To convert, multiply the value in pounds per foot-second by 1.488164.
How do I convert 1 lb/(ft·s) to kg/(m·s)?
1 lb/(ft·s) = 1.48816 kg/(m·s). For any value, multiply by 1.488164.
How do I convert kg/(m·s) back to lb/(ft·s)?
Divide by the same factor — or equivalently, multiply by 0.671969. So 1 kg/(m·s) = 0.671969 lb/(ft·s).
When would I need to convert pound per foot-second to kilogram per metre-second?
Dynamic viscosity conversions between lb/(ft·s) and kg/(m·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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