Convert Square feet per second to Stokes
Instantly convert Square feet per second (ft²/s) to Stokes (St) with our free online calculator.
Formula: ft²/s to St — multiply by 929.03
Reference Table
| Square feet per second (ft²/s) | Stokes (St) |
|---|---|
| 1 | 929.03 |
| 5 | 4645.15 |
| 10 | 9290.3 |
| 25 | 23225.8 |
| 50 | 46451.5 |
| 100 | 92903 |
How to Convert Square feet per second to Stokes
Formula
To convert Square feet per second (ft²/s) to Stokes (St): multiply by 929.03
Step-by-Step
- Start with your value in Square feet per second (ft²/s).
- Multiply by 929.03 to perform the conversion.
- The result is your value expressed in Stokes (St).
Conversion Factor
1 ft²/s = 929.03 St
Reverse Factor
1 St = 0.00107639 ft²/s
Worked Example
Convert 25 Square feet per second to Stokes: 25 ft²/s = 23225.8 St
About Square foot per second (ft²/s)
An imperial unit of kinematic viscosity equal to ≈ 0.092903 m²/s = 92,903 cSt per NIST SP 811. Ft²/s is a very large unit — appropriate for gaseous and highly mobile fluids but unwieldy for common liquids (water at 20 °C is only 1.08 × 10⁻⁵ ft²/s, which is essentially zero on a normal scale). Primarily encountered in: pre-1990s US-edition fluid-mechanics textbooks (Streeter, Roberson-Crowe, Olson) where the entire problem set is in lb-ft-s units to keep dimensional analysis clean; older US petroleum engineering pipeline-flow literature; and some US Bureau of Reclamation hydraulics publications. Reference values: air at 60 °F ~1.6 × 10⁻⁴ ft²/s; standard atmospheric air at 32,000 ft (jetliner cruise altitude) ~5.5 × 10⁻⁴ ft²/s. Convert ft²/s to m²/s by multiplying by 0.0929; to cSt by multiplying by 92,903.
About Stoke (St)
The CGS unit of kinematic viscosity equal to exactly 1 cm²/s (= 100 cSt = 10⁻⁴ m²/s). Named after Irish mathematician Sir George Gabriel Stokes, whose 1851 paper 'On the Effect of the Internal Friction of Fluids on the Motion of Pendulums' (Cambridge Phil. Trans.) established the laminar-drag formula F = 6πμrv (Stokes' law) — still the basis for terminal-velocity calculations for sedimenting particles, atmospheric aerosol settling rates, and laboratory particle-sizing techniques (Stokes diameter). The stoke as a unit is occasionally used directly for highly viscous fluids in geophysics and glass science where typical values are large enough that cSt would have many leading zeros: basaltic lava 10² to 10⁴ St at eruption temperature, granitic / rhyolitic lava 10⁹ to 10¹¹ St, the asthenosphere of Earth's mantle 10¹⁸ to 10²⁰ St, the lower mantle 10²² St, glass at the working point ~10⁴ St.
Quick Facts
- 1 Square foot per second equals 929.03 Stokes
- 1 Stoke equals 0.00107639 Square feet per second
- Square foot per second is a unit of kinematic viscosity
- Stoke is a unit of kinematic viscosity
- This conversion is commonly used in fluid flow analysis, lubrication engineering, and process design
- The Square foot per second belongs to the imperial system
- The Stoke belongs to the metric system
Common Square foot per second to Stoke Conversions
| Square feet per second (ft²/s) | Stokes (St) |
|---|---|
| 0.01 | 9.2903 |
| 0.1 | 92.903 |
| 0.25 | 232.257 |
| 0.5 | 464.515 |
| 1 | 929.03 |
| 2 | 1858.06 |
| 3 | 2787.09 |
| 5 | 4645.15 |
| 10 | 9290.3 |
| 15 | 13935.4 |
| 20 | 18580.6 |
| 25 | 23225.8 |
| 50 | 46451.5 |
| 75 | 69677.3 |
| 100 | 92903 |
| 250 | 232258 |
| 500 | 464515 |
| 1000 | 929030 |
| 5000 | 4645150 |
| 10000 | 9290300 |
Understanding Square feet per second
The Square foot per second (symbol: ft²/s) is a unit of kinematic viscosity. An imperial unit of kinematic viscosity equal to ≈ 0.092903 m²/s = 92,903 cSt per NIST SP 811. Ft²/s is a very large unit — appropriate for gaseous and highly mobile fluids but unwieldy for common liquids (water at 20 °C is only 1.08 × 10⁻⁵ ft²/s, which is essentially zero on a normal scale). Primarily encountered in: pre-1990s US-edition fluid-mechanics textbooks (Streeter, Roberson-Crowe, Olson) where the entire problem set is in lb-ft-s units to keep dimensional analysis clean; older US petroleum engineering pipeline-flow literature; and some US Bureau of Reclamation hydraulics publications. Reference values: air at 60 °F ~1.6 × 10⁻⁴ ft²/s; standard atmospheric air at 32,000 ft (jetliner cruise altitude) ~5.5 × 10⁻⁴ ft²/s. Convert ft²/s to m²/s by multiplying by 0.0929; to cSt by multiplying by 92,903.
It belongs to the imperial measurement system.
Square feet per second are commonly used in fluid flow analysis, lubrication engineering, and process design.
Understanding Stokes
The Stoke (symbol: St) is a unit of kinematic viscosity. The CGS unit of kinematic viscosity equal to exactly 1 cm²/s (= 100 cSt = 10⁻⁴ m²/s). Named after Irish mathematician Sir George Gabriel Stokes, whose 1851 paper 'On the Effect of the Internal Friction of Fluids on the Motion of Pendulums' (Cambridge Phil. Trans.) established the laminar-drag formula F = 6πμrv (Stokes' law) — still the basis for terminal-velocity calculations for sedimenting particles, atmospheric aerosol settling rates, and laboratory particle-sizing techniques (Stokes diameter). The stoke as a unit is occasionally used directly for highly viscous fluids in geophysics and glass science where typical values are large enough that cSt would have many leading zeros: basaltic lava 10² to 10⁴ St at eruption temperature, granitic / rhyolitic lava 10⁹ to 10¹¹ St, the asthenosphere of Earth's mantle 10¹⁸ to 10²⁰ St, the lower mantle 10²² St, glass at the working point ~10⁴ St.
It belongs to the metric measurement system.
Stokes are commonly used in fluid flow analysis, lubrication engineering, and process design.
Why Convert Square feet per second to Stokes?
Converting between Square feet per second and Stokes is a frequent requirement for engineers, scientists, and students working with kinematic viscosity values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate kinematic viscosity conversion is essential.
Frequently Asked Questions
How do I convert Square feet per second to Stokes?
An imperial unit of kinematic viscosity equal to ≈ 0. To convert Square feet per second to Stokes, multiply by 929.03. For example, 25 ft²/s equals 23225.8 St.
How many Stokes are in 1 Square foot per second?
There are 929.03 Stokes in 1 Square foot per second.
How many Square feet per second are in 1 Stoke?
There are 0.00107639 Square feet per second in 1 Stoke.
What is the formula for Square foot per second to Stoke conversion?
The formula is: multiply by 929.03. This means 1 ft²/s = 929.03 St.
Is a Square foot per second bigger than a Stoke?
No. One Square foot per second is smaller than one Stoke because 1 ft²/s equals 929.03 St, which is greater than 1.
When do you need to convert between Square feet per second and Stokes?
The CGS unit of kinematic viscosity equal to exactly 1 cm²/s (= 100 cSt = 10⁻⁴ m²/s). Square foot per second and Stoke are both kinematic viscosity units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.