Convert Square Foot per Second to Square Inch per Second
Enter the number of square feet per second that you want to convert to square inches per second.
How to Convert Square Feet per Second to Square Inches per Second
The square foot per second and square inch per second are both units of viscosity. By definition, 1 square foot per second equals exactly 144 square inches per second. This means to convert square feet per second to square inches per second, you multiply by 144.
Formula
Step-by-Step Example
Convert 5 ft²/s to square inches per second:
We need to convert square feet per second to square inches per second
Since 1 ft²/s = 144 in²/s, multiply by 144
5 × 144 = 720
5 ft²/s = 720 in²/s
Square Foot per Second to Square Inch per Second Conversion Table
Quick reference table for common square foot per second to square inch per second conversions. Click any value for detailed calculation.
| Square Feet per Second (ft²/s) | Square Inches per Second (in²/s) |
|---|---|
| 0.1 ft²/s | 14.4 in²/s |
| 0.5 ft²/s | 72 in²/s |
| 1 ft²/s | 144 in²/s |
| 2 ft²/s | 288 in²/s |
| 5 ft²/s | 720 in²/s |
| 10 ft²/s | 1440 in²/s |
| 25 ft²/s | 3600 in²/s |
| 50 ft²/s | 7200 in²/s |
| 100 ft²/s | 14400 in²/s |
About These Units
Square Foot per Second (ft²/s)
Square feet per second (ft²/s) is the US imperial kinematic viscosity unit equal to 929 stokes or 92,903 centistokes. Water at 20°C: 1.08×10⁻⁵ ft²/s. Used in US fluid mechanics, pipe flow calculations, and HVAC engineering. One ft²/s = 0.0929 m²/s.
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 square feet per second to square inches per second?
To convert square feet per second to square inches per second, multiply the value by 144. For example, 10 ft²/s = 1440 in²/s.
How many square inches per second are in 1 square foot per second?
1 square foot per second equals 144 square inches per second.
What is the formula for square feet per second to square inches per second?
The formula is: in²/s = ft²/s × 144.