Viscosity
Sttoft²/s
Convert stokes (St) to square feet per second (ft²/s).
Factor1 St = 0.001076391 ft²/s
Converter
St
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ft²/s
Rendered to 6 significant figures.
Formula
Formula
ft²/s = St × 0.001076391
Multiply any value in stokes by 0.001076391 to obtain the value in square feet per second.
Worked example
Convert 1000 St to ft²/s.
- 01Start with 1000 St.
- 02Multiply by the conversion factor: 1000 × 0.001076391 = 1.07639 ft²/s.
Result1000 St = 1.07639 ft²/s
Conversion table
| St | ft²/s |
|---|---|
| 1 | 0.0010764 |
| 2 | 0.0021528 |
| 5 | 0.005382 |
| 10 | 0.010764 |
| 20 | 0.021528 |
| 50 | 0.05382 |
| 100 | 0.10764 |
| 200 | 0.21528 |
| 500 | 0.5382 |
| 1000 | 1.0764 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from St to ft²/s?
1 St equals 0.001076391 ft²/s. To convert, multiply the value in stokes by 0.001076391.
How do I convert 1 St to ft²/s?
1 St = 0.00107639 ft²/s. For any value, multiply by 0.001076391.
How do I convert ft²/s back to St?
Divide by the same factor — or equivalently, multiply by 929.0304. So 1 ft²/s = 929.03 St.
When would I need to convert stoke to square foot per second?
Kinematic viscosity conversions between St and ft²/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).