Viscosity
ft²/stoSt
Convert square feet per second (ft²/s) to stokes (St).
Factor1 ft²/s = 929.0304 St
Converter
ft²/s
Accepts numbers or expressions, e.g. 150 + 14.7
Result
St
Rendered to 6 significant figures.
Formula
Formula
St = ft²/s × 929.0304
Multiply any value in square feet per second by 929.0304 to obtain the value in stokes.
Worked example
Convert 1 ft²/s to St.
- 01Start with 1 ft²/s.
- 02Multiply by the conversion factor: 1 × 929.0304 = 929.03 St.
Result1 ft²/s = 929.03 St
Conversion table
| ft²/s | St |
|---|---|
| 1 | 929.03 |
| 2 | 1858.1 |
| 5 | 4645.2 |
| 10 | 9290.3 |
| 20 | 18581 |
| 50 | 46452 |
| 100 | 92903 |
| 200 | 1.8581e+5 |
| 500 | 4.6452e+5 |
| 1000 | 9.2903e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ft²/s to St?
1 ft²/s equals 929.0304 St. To convert, multiply the value in square feet per second by 929.0304.
How do I convert 1 ft²/s to St?
1 ft²/s = 929.03 St. For any value, multiply by 929.0304.
How do I convert St back to ft²/s?
Divide by the same factor — or equivalently, multiply by 0.001076391. So 1 St = 0.00107639 ft²/s.
When would I need to convert square foot per second to stoke?
Kinematic viscosity conversions between ft²/s and St 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).