Convert an already-known kinematic viscosity between SI, CGS, and engineering area-per-time units without density or fluid assumptions.
Kinematic viscosity describes momentum diffusion in a fluid and has area-per-time dimensions. Its SI unit is the square meter per second (m²/s).
This page converts a known kinematic viscosity only. It does not calculate from dynamic viscosity, density, fluid identity, temperature, or pressure.
target = source × source factor to m²/s ÷ target factor to m²/s1 St = 1 cm²/s = 0.0001 m²/s1 cSt = 0.01 St = 1 mm²/s = 0.000001 m²/s1 cSt equals 0.000001 m²/s and exactly 1 mm²/s.
100 cSt equals 1 St, while 1 St equals 100 cSt and 0.0001 m²/s.
1 ft²/s equals 0.09290304 m²/s using the exact international foot.
1 in²/s equals 0.00064516 m²/s using the exact international inch.
1 m²/s equals 1,000,000 cSt.
cSt and m²/s are kinematic units; cP and Pa·s are dynamic-viscosity units.
Moving between dynamic and kinematic viscosity requires density and is outside this converter.
Other diffusivities share m²/s dimensions but represent different physical quantities.
Common values are often much smaller than 1 m²/s, making mm²/s and cSt convenient representations.
One St is one cm²/s. One cSt is one hundredth of a St and is exactly one mm²/s.
Square feet or square inches per time describe the same kinematic-viscosity quantity. Their factors derive from exact length and hour definitions.
Dynamic viscosity uses Pa·s and cP. Kinematic viscosity uses m²/s and cSt. Their relationship requires density; this converter provides no cP-to-cSt conversion.
Kinematic viscosity has area-per-time dimensions but is not plain area, duration, volumetric flow, or a generic diffusivity lookup.
Multiply by the source factor to m²/s and divide by the target factor.
The SI unit is m²/s.
One St is one cm²/s or 0.0001 m²/s.
One cSt is 0.01 St or 0.000001 m²/s.
There are 100 cSt in one St.
Yes. They are exact equivalent units.
There are 1,000,000 cSt in one m²/s.
Multiply cSt by 0.000001.
Multiply m²/s by 1,000,000.
Kinematic viscosity is dynamic viscosity divided by density.
No. They measure different viscosity quantities.
No. Density is required.
Density connects dynamic viscosity to kinematic viscosity.
No. They have different dimensions and meanings.
It has area-per-time dimensions, but specifically represents momentum diffusion.
Ordinary kinematic-viscosity magnitude is nonnegative, so negative input is rejected.