Convert Pound-force Second per Square Foot to Square Inch per Second
Input the number of pound-force seconds per square foot you want to convert to square inches per second.
How to Convert Pound-force Seconds per Square Foot to Square Inches per Second
The pound-force second per square foot and square inch per second are both units of viscosity. 1 pound-force second per square foot equals 74214.551429 square inches per second. This means to convert pound-force seconds per square foot to square inches per second, you multiply by 74214.551429.
Formula
Step-by-Step Example
Convert 5 lbf·s/ft² to square inches per second:
We need to convert pound-force seconds per square foot to square inches per second
Since 1 lbf·s/ft² = 74214.551429 in²/s, multiply by 74214.551429
5 × 74214.551429 = 371072.75715
5 lbf·s/ft² = 371072.75715 in²/s
Pound-force Second per Square Foot to Square Inch per Second Conversion Table
Quick reference table for common pound-force second per square foot to square inch per second conversions. Click any value for detailed calculation.
| Pound-force Seconds per Square Foot (lbf·s/ft²) | Square Inches per Second (in²/s) |
|---|---|
| 0.1 lbf·s/ft² | 7421.4551429 in²/s |
| 0.5 lbf·s/ft² | 37107.275715 in²/s |
| 1 lbf·s/ft² | 74214.551429 in²/s |
| 2 lbf·s/ft² | 148429.10286 in²/s |
| 5 lbf·s/ft² | 371072.75715 in²/s |
| 10 lbf·s/ft² | 742145.51429 in²/s |
| 25 lbf·s/ft² | 1855363.7857 in²/s |
| 50 lbf·s/ft² | 3710727.5715 in²/s |
| 100 lbf·s/ft² | 7421455.1429 in²/s |
About These Units
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.
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.
Frequently Asked Questions
How do I convert pound-force seconds per square foot to square inches per second?
To convert pound-force seconds per square foot to square inches per second, multiply the value by 74214.551429. For example, 10 lbf·s/ft² = 742145.51429 in²/s.
How many square inches per second are in 1 pound-force second per square foot?
1 pound-force second per square foot equals 74214.551429 square inches per second.
What is the formula for pound-force seconds per square foot to square inches per second?
The formula is: in²/s = lbf·s/ft² × 74214.551429.