Convert Stokes to Pound-force Second per Square Inch
Type the number of stokes that you wish to convert to pound-force seconds per square inch.
How to Convert Stokes to Pound-force Seconds per Square Inch
The stokes and pound-force second per square inch are both units of viscosity. By definition, 1 pound-force second per square inch equals exactly 68947570 stokes. This means to convert stokes to pound-force seconds per square inch, you divide by 68947570.
Formula
Step-by-Step Example
Convert 5 St to pound-force seconds per square inch:
We need to convert stokes to pound-force seconds per square inch
Since 1 lbf·s/in² = 68947570 St, divide by 68947570
5 ÷ 68947570 = 7.2518871949e-8
5 St = 7.2518871949e-8 lbf·s/in²
Stokes to Pound-force Second per Square Inch Conversion Table
Quick reference table for common stokes to pound-force second per square inch conversions. Click any value for detailed calculation.
| Stokes (St) | Pound-force Seconds per Square Inch (lbf·s/in²) |
|---|---|
| 0.1 St | 1.450377439e-9 lbf·s/in² |
| 0.5 St | 7.2518871949e-9 lbf·s/in² |
| 1 St | 1.450377439e-8 lbf·s/in² |
| 2 St | 2.9007548779e-8 lbf·s/in² |
| 5 St | 7.2518871949e-8 lbf·s/in² |
| 10 St | 1.450377439e-7 lbf·s/in² |
| 25 St | 3.6259435974e-7 lbf·s/in² |
| 50 St | 7.2518871949e-7 lbf·s/in² |
| 100 St | 1.450377439e-6 lbf·s/in² |
About These Units
Stokes (St)
The stokes (St) is the CGS unit of kinematic viscosity equal to 1 cm²/s or 100 centistokes. Named after physicist George Stokes. Water at 20°C: 0.01 St, light motor oil: 0.3-1 St at 40°C. One stokes = 10⁻⁴ m²/s. Common in technical literature.
Pound-force Second per Square Inch (lbf·s/in²)
Pound-force second per square inch (lbf·s/in²) equals 6,895 Pa·s—very high viscosity scale. Equal to one reyn. Used for extremely viscous materials: pitch, tar, and high-pressure lubricant calculations. Water is only 1.45×10⁻⁷ lbf·s/in².
Frequently Asked Questions
How do I convert stokes to pound-force seconds per square inch?
To convert stokes to pound-force seconds per square inch, divide the value by 68947570. For example, 10 St = 1.450377439e-7 lbf·s/in².
How many pound-force seconds per square inch are in 1 stokes?
1 stokes equals 1.450377439e-8 pound-force seconds per square inch.
What is the formula for stokes to pound-force seconds per square inch?
The formula is: lbf·s/in² = St ÷ 68947570.