Convert Stokes to Square millimeters per second
Instantly convert Stokes (St) to Square millimeters per second (mm²/s) with our free online calculator.
Formula: St to mm²/s — multiply by 100
Reference Table
| Stokes (St) | Square millimeters per second (mm²/s) |
|---|---|
| 1 | 100 |
| 5 | 500 |
| 10 | 1000 |
| 25 | 2500 |
| 50 | 5000 |
| 100 | 10000 |
How to Convert Stokes to Square millimeters per second
Formula
To convert Stokes (St) to Square millimeters per second (mm²/s): multiply by 100
Step-by-Step
- Start with your value in Stokes (St).
- Multiply by 100 to perform the conversion.
- The result is your value expressed in Square millimeters per second (mm²/s).
Conversion Factor
1 St = 100 mm²/s
Reverse Factor
1 mm²/s = 0.01 St
Worked Example
Convert 25 Stokes to Square millimeters per second: 25 St = 2500 mm²/s
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.
About Square millimeter per second (mm²/s)
A metric kinematic-viscosity unit numerically equal to the CGS centistoke (1 cSt ≡ 1 mm²/s exactly = 10⁻⁶ m²/s). mm²/s is the universal working unit in lubricant engineering, fuels, and hydraulic-fluid specification because typical values fall in the convenient 1-1,000 range. Reference values: water at 20 °C 1.00 mm²/s (the famous calibration baseline), SAE 30 engine oil at 40 °C ~100 mm²/s, heavy gear oil 1,000-2,000 mm²/s, EP-90 gear oil 220-330 mm²/s, ATF (automatic-transmission fluid) ~38 mm²/s at 40 °C. Industry standards: ISO 3104 (Petroleum products — kinematic-viscosity test method), ASTM D445 (the standard US capillary-viscometer test), ISO VG (Viscosity Grade) lubricant classification system — VG 32, VG 46, VG 68, VG 100, VG 220 numbers ARE the cSt/mm²/s value at 40 °C, ±10%. Marine residual fuel oil (HFO) per ISO 8217 quotes viscosity in mm²/s at 50 °C (RMK 700 grade = 700 mm²/s at 50 °C).
Quick Facts
- 1 Stoke equals 100 Square millimeters per second
- 1 Square millimeter per second equals 0.01 Stokes
- Stoke is a unit of kinematic viscosity
- Square millimeter per second is a unit of kinematic viscosity
- This conversion is commonly used in fluid flow analysis, lubrication engineering, and process design
- The Stoke belongs to the metric system
Common Stoke to Square millimeter per second Conversions
| Stokes (St) | Square millimeters per second (mm²/s) |
|---|---|
| 0.01 | 1 |
| 0.1 | 10 |
| 0.25 | 25 |
| 0.5 | 50 |
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
| 5 | 500 |
| 10 | 1000 |
| 15 | 1500 |
| 20 | 2000 |
| 25 | 2500 |
| 50 | 5000 |
| 75 | 7500 |
| 100 | 10000 |
| 250 | 25000 |
| 500 | 50000 |
| 1000 | 100000 |
| 5000 | 500000 |
| 10000 | 1000000 |
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.
Understanding Square millimeters per second
The Square millimeter per second (symbol: mm²/s) is a unit of kinematic viscosity. A metric kinematic-viscosity unit numerically equal to the CGS centistoke (1 cSt ≡ 1 mm²/s exactly = 10⁻⁶ m²/s). mm²/s is the universal working unit in lubricant engineering, fuels, and hydraulic-fluid specification because typical values fall in the convenient 1-1,000 range. Reference values: water at 20 °C 1.00 mm²/s (the famous calibration baseline), SAE 30 engine oil at 40 °C ~100 mm²/s, heavy gear oil 1,000-2,000 mm²/s, EP-90 gear oil 220-330 mm²/s, ATF (automatic-transmission fluid) ~38 mm²/s at 40 °C. Industry standards: ISO 3104 (Petroleum products — kinematic-viscosity test method), ASTM D445 (the standard US capillary-viscometer test), ISO VG (Viscosity Grade) lubricant classification system — VG 32, VG 46, VG 68, VG 100, VG 220 numbers ARE the cSt/mm²/s value at 40 °C, ±10%. Marine residual fuel oil (HFO) per ISO 8217 quotes viscosity in mm²/s at 50 °C (RMK 700 grade = 700 mm²/s at 50 °C).
It belongs to the metric measurement system.
Square millimeters per second are commonly used in fluid flow analysis, lubrication engineering, and process design.
Why Convert Stokes to Square millimeters per second?
Converting between Stokes and Square millimeters per second 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 Stokes to Square millimeters per second?
The CGS unit of kinematic viscosity equal to exactly 1 cm²/s (= 100 cSt = 10⁻⁴ m²/s). To convert Stokes to Square millimeters per second, multiply by 100. For example, 25 St equals 2500 mm²/s.
How many Square millimeters per second are in 1 Stoke?
There are 100 Square millimeters per second in 1 Stoke.
How many Stokes are in 1 Square millimeter per second?
There are 0.01 Stokes in 1 Square millimeter per second.
What is the formula for Stoke to Square millimeter per second conversion?
The formula is: multiply by 100. This means 1 St = 100 mm²/s.
Is a Stoke bigger than a Square millimeter per second?
No. One Stoke is smaller than one Square millimeter per second because 1 St equals 100 mm²/s, which is greater than 1.
When do you need to convert between Stokes and Square millimeters per second?
A metric kinematic-viscosity unit numerically equal to the CGS centistoke (1 cSt ≡ 1 mm²/s exactly = 10⁻⁶ m²/s). Stoke and Square millimeter per second 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.