Kinematic Viscosity Converter
Convert between 5 units of kinematic viscosity — m²/s, cm²/s (Stokes), mm²/s (Centistokes), ft²/s, and in²/s.
About the Kinematic Viscosity Converter
Kinematic viscosity is dynamic viscosity divided by fluid density (ν = μ/ρ). It describes how a fluid flows under gravity alone, without an external pressure gradient. The SI unit is m²/s, but the centistoke (cSt = mm²/s) is standard in lubrication engineering. Fuel injection systems and hydraulic circuits are designed around kinematic viscosity specifications.
- ›Water at 20 °C has a kinematic viscosity of approximately 1.004 cSt (mm²/s)
- ›Aviation turbine fuels are specified to have viscosities between 8 and 12 cSt at −20 °C
- ›ISO viscosity grades for lubricants (ISO VG 32, 46, 68) are kinematic viscosity in cSt at 40 °C
- ›Blood has a kinematic viscosity of about 3–4 cSt at body temperature
m²/s to mm²/s (cSt) — Conversion Table
| m²/s (m²/s) | mm²/s (cSt) (cSt) |
|---|---|
| 1 m²/s | 1,000,000 cSt |
| 2 m²/s | 2,000,000 cSt |
| 5 m²/s | 5,000,000 cSt |
| 10 m²/s | 10,000,000 cSt |
| 20 m²/s | 20,000,000 cSt |
| 50 m²/s | 50,000,000 cSt |
| 100 m²/s | 100,000,000 cSt |
| 1,000 m²/s | 1.0000e+9 cSt |
Last updated: July 27, 2026 · Calculated using SI-validated constants (NIST)
Frequently Asked Questions
What units does the Kinematic Viscosity Converter support?
The Kinematic Viscosity Converter supports multiple units with instant conversion. Convert between 5 units of kinematic viscosity — m²/s, cm²/s (Stokes), mm²/s (Centistokes), ft²/s, and in²/s. All results use SI-validated constants accurate to 8 significant figures.
Is this Kinematic Viscosity Converter free?
Yes — completely free. No registration, no limits. Works on all devices including mobile.
How accurate is this converter?
Accurate to 8 significant figures using precise mathematical constants validated against international SI standards (NIST and ISO 80000).