Convert Square Inch per Second to Pound-force Second per Square Foot
Input the number of square inches per second you want to convert to pound-force seconds per square foot.
How to Convert Square Inches per Second to Pound-force Seconds per Square Foot
The square inch per second and pound-force second per square foot are both units of viscosity. 1 pound-force second per square foot equals 74214.551429 square inches per second. This means to convert square inches per second to pound-force seconds per square foot, you divide by 74214.551429.
Formula
Step-by-Step Example
Convert 5 in²/s to pound-force seconds per square foot:
We need to convert square inches per second to pound-force seconds per square foot
Since 1 lbf·s/ft² = 74214.551429 in²/s, divide by 74214.551429
5 ÷ 74214.551429 = 6.7372232315e-5
5 in²/s = 6.7372232315e-5 lbf·s/ft²
Square Inch per Second to Pound-force Second per Square Foot Conversion Table
Quick reference table for common square inch per second to pound-force second per square foot conversions. Click any value for detailed calculation.
| Square Inches per Second (in²/s) | Pound-force Seconds per Square Foot (lbf·s/ft²) |
|---|---|
| 0.1 in²/s | 1.3474446463e-6 lbf·s/ft² |
| 0.5 in²/s | 6.7372232315e-6 lbf·s/ft² |
| 1 in²/s | 1.3474446463e-5 lbf·s/ft² |
| 2 in²/s | 2.6948892926e-5 lbf·s/ft² |
| 5 in²/s | 6.7372232315e-5 lbf·s/ft² |
| 10 in²/s | 0.0001347445 lbf·s/ft² |
| 25 in²/s | 0.0003368612 lbf·s/ft² |
| 50 in²/s | 0.0006737223 lbf·s/ft² |
| 100 in²/s | 0.0013474446 lbf·s/ft² |
About These Units
Square Inch per Second (in²/s)
Square inches per second (in²/s) equals 6.45 stokes or 645 centistokes. Used for moderate viscosity materials in imperial units. Water at 20°C: 1.55×10⁻³ in²/s. One ft²/s = 144 in²/s. Common in smaller-scale US engineering applications.
Pound-force Second per Square Foot (lbf·s/ft²)
Pound-force second per square foot (lbf·s/ft²) is the primary US imperial dynamic viscosity unit, equal to 47.88 Pa·s. Used in HVAC, hydraulics, and US engineering calculations. Also called poundal-second per square foot. Water is about 2.1×10⁻⁵ lbf·s/ft².
Frequently Asked Questions
How do I convert square inches per second to pound-force seconds per square foot?
To convert square inches per second to pound-force seconds per square foot, divide the value by 74214.551429. For example, 10 in²/s = 0.0001347445 lbf·s/ft².
How many pound-force seconds per square foot are in 1 square inch per second?
1 square inch per second equals 1.3474446463e-5 pound-force seconds per square foot.
What is the formula for square inches per second to pound-force seconds per square foot?
The formula is: lbf·s/ft² = in²/s ÷ 74214.551429.