Kinematic Viscosity Converter
Convert between centistokes, stokes, square meters per second, square millimeters per second, square feet per second and other units of kinematic viscosity.
1 square meter per second = 1 square meter per second
Most used kinematic viscosity units
- Centistokes cSt 1 cSt = 0.000001 m²/s
- Square meter per second m²/s Base unit
- Stokes St 1 St = 0.0001 m²/s
- Square millimeter per second mm²/s 1 mm²/s = 0.000001 m²/s
- Square foot per second ft²/s 1 ft²/s = 0.09290304 m²/s
- Square centimeter per second cm²/s 1 cm²/s = 0.0001 m²/s
- Square inch per second in²/s 1 in²/s = 0.00064516 m²/s
- Square meter per hour m²/h 1 m²/h = 0.00027777778 m²/s
- Millistokes mSt 1 mSt = 1 × 10-7 m²/s
Popular kinematic viscosity conversions
- Centistokes to stokes 1 cSt = 0.01 St
- Stokes to centistokes 1 St = 100 cSt
- Centistokes to square meters per second 1 cSt = 0.000001 m²/s
- Square millimeters per second to centistokes 1 mm²/s = 1 cSt
What is kinematic viscosity?
Kinematic viscosity is a fluid's dynamic viscosity divided by its density. It describes how quickly a fluid flows under its own weight, which is what matters for lubricating oils, fuels and hydraulic fluids. The SI unit is the square meter per second; the practical unit is the centistokes (cSt), exactly equal to one square millimeter per second.
Motor oil grades are defined by kinematic viscosity: an SAE 30 oil is about 9.3–12.5 cSt at 100 °C. Water at 20 °C is about 1 cSt.
Kinematic viscosity units from smallest to largest
Every proportional kinematic viscosity unit on the site, ordered by size and expressed in square meters per second.
- Millistokes 1 × 10-7 m²/s
- Centistokes 0.000001 m²/s
- Square millimeter per second 0.000001 m²/s
- Stokes 0.0001 m²/s
- Square centimeter per second 0.0001 m²/s
- Square meter per hour 0.000277778 m²/s
- Square inch per second 0.00064516 m²/s
- Square foot per second 0.092903 m²/s
- Square meter per second 1 m²/s
All 9 kinematic viscosity units
Units
Frequently asked questions
How many cSt is 1 mm²/s?
Exactly 1: the centistokes and the square millimeter per second are the same unit.