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Viscosity

ft²/stomm²/s

Convert square feet per second (ft²/s) to square millimetres per second (mm²/s).

Factor1 ft²/s = 92903.04 mm²/s

Converter

ft²/s

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

Result
92903mm²/s

Rendered to 6 significant figures.

Formula

Formula
mm²/s = ft²/s × 92903.04

Multiply any value in square feet per second by 92903.04 to obtain the value in square millimetres per second.

Worked example

Convert 1 ft²/s to mm²/s.

  1. 01Start with 1 ft²/s.
  2. 02Multiply by the conversion factor: 1 × 92903.04 = 92903 mm²/s.
Result1 ft²/s = 92903 mm²/s

Conversion table

ft²/smm²/s
192903
21.8581e+5
54.6452e+5
109.2903e+5
201.8581e+6
504.6452e+6
1009.2903e+6
2001.8581e+7
5004.6452e+7
10009.2903e+7

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ft²/s to mm²/s?
1 ft²/s equals 92903.04 mm²/s. To convert, multiply the value in square feet per second by 92903.04.
How do I convert 1 ft²/s to mm²/s?
1 ft²/s = 92903 mm²/s. For any value, multiply by 92903.04.
How do I convert mm²/s back to ft²/s?
Divide by the same factor — or equivalently, multiply by 1.076391e-5. So 1 mm²/s = 1.07639e-5 ft²/s.
When would I need to convert square foot per second to square millimetre per second?
Kinematic viscosity conversions between ft²/s and mm²/s arise in hydraulic fluid selection, lubricant grading (ISO VG), pipe flow Reynolds number calculations, and fuel-oil specification. Kinematic viscosity equals dynamic viscosity divided by fluid density and cannot be directly compared to dynamic viscosity without that context.
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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