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Viscosity (kinematic) converter
Dynamic viscosity divided by density — what oil grades measure. 6 units, converted from one table of exact factors.
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1 square meter/second in every other viscosity (kinematic) unit
Computed by the same engine that runs the converter above, so these can never drift apart from it.
| From | Equals | Unit |
|---|---|---|
| 1 square meter/second | 1,000,000 | square millimeter/second (mm²/s) |
| 1 square meter/second | 10,000 | stokes (St) |
| 1 square meter/second | 1,000,000 | centistokes (cSt) |
| 1 square meter/second | 10.76391042 | square foot/second (ft²/s) |
| 1 square meter/second | 1,550.0031 | square inch/second (in²/s) |
What each unit actually is
Most converters give you a number and stop. Where a figure is exact by definition we say so, and where it is an average or shifts with conditions we say that too — that is usually the thing you needed to know.
| Unit | Symbol | What it actually is |
|---|---|---|
| square meter/second | m²/s | SI. |
| square millimeter/second | mm²/s | Identical to the centistoke. Motor oil grades are quoted here. |
| stokes | St | The CGS unit. |
| centistokes | cSt | Water is about 1 at 20°C. |
| square foot/second | ft²/s | Exact. |
| square inch/second | in²/s | Exact. |
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