Kinematic Viscosity Converter
Convert kinematic viscosity between square meters per second, stokes, centistokes, square feet per second, and more.
How Kinematic Viscosity Conversion Works
Kinematic viscosity units use linear scaling — convert between units using conversion factors:
Example: 1 m²/s = 10000 St
Actual Calculation
Why Trust This Converter?
Conversion Formula
Accuracy & Standards
Unit Relationship Diagram
Kinematic Viscosity Unit Comparison
| Unit | Symbol | Equals (in m²/s) | Used In |
|---|---|---|---|
| Square meter per second | m²/s | 1 | 🌍 Worldwide |
| Stokes | St | 0.0001 | 🔬 Science |
| Centistokes | cSt | 0.000001 | 🔬 Lab |
| Square foot per second | ft²/s | 0.092903 | 🇺🇸 USA |
| Square millimeter per second | mm²/s | 0.000001 | 🌍 Worldwide |
| Square centimeter per second | cm²/s | 0.0001 | 🌍 Worldwide |
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How This Converter Works
This kinematic viscosity converter uses linear scaling — converting between units using multiplication factors based on the viscosity relationship.
Step 1: Convert input value using the "From" unit's factor
Step 2: Convert to the "To" unit using the target unit's factor
Real Examples
Limitations
- • This tool is for informational purposes only
- • Results should not be used for legal or certified measurements
- • Always verify critical calculations with official sources
Trust & Privacy
All calculations are performed locally in your browser. No personal information is stored or shared.
References
- BIPM SI Brochure – International System of Units
- NIST Special Publication 811 – Guide to SI Units
- ISO 80000-3 – Quantities and Units, Space and Time
References were selected from recognized standards organizations and are reviewed periodically for accuracy.
Editorial Process
The CalculatorKits editorial team reviews this tool periodically.
- Conversion formula accuracy
- Unit definitions and standards
- User guidance and clarity
- Educational content
Last reviewed: July 2026
Frequently Asked Questions
Enter a value, select the "From" and "To" units, and the result appears instantly.
We support m²/s, St, cSt, ft²/s, mm²/s, cm²/s, and more.
Yes, it uses standard SI conversion factors and is accurate for all supported units.
1 m²/s = 10000 St. This is a common conversion for kinematic viscosity.
Yes, your recent conversions are saved locally in your browser.
📍 Kinematic Viscosity Converter — For educational and informational use only
Kinematic Viscosity Converter: Convert cSt, St and m²/s
Kinematic viscosity is widely used when describing how fluids move under the influence of gravity and other forces. It appears frequently in automotive lubrication, petroleum products, engineering calculations, and fluid mechanics.
The difficulty is that kinematic viscosity can be expressed using SI units such as m²/s or traditional units such as stokes and centistokes.
A Kinematic Viscosity Converter makes those conversions much easier.
The CalculatorKits tool supports more than 25 kinematic viscosity units, including m²/s, St, cSt, ft²/s, and mm²/s.
Try the Kinematic Viscosity Converter
What Is Kinematic Viscosity?
Kinematic viscosity describes dynamic viscosity relative to fluid density.
The relationship is:
ν = μ ÷ ρ
where:
ν is kinematic viscosity
μ is dynamic viscosity
ρ is density
The SI unit is:
m²/s
NIST identifies m²/s as the SI unit for kinematic viscosity. It also gives the traditional relationship between stokes and SI units.
Common Kinematic Viscosity Units
You may encounter:
- m²/s
- mm²/s
- St
- cSt
- ft²/s
Centistokes are particularly common in specifications for oils and lubricants.
How to Use the Kinematic Viscosity Converter
1. Enter the Value
Type your kinematic viscosity value.
2. Select the From Unit
Choose the original unit.
3. Select the To Unit
Choose the target unit.
4. Convert
The calculator provides the result immediately.
5. Review the Conversion
The tool shows the conversion relationship and factor.
m²/s to Stokes
The CalculatorKits page uses:
1 m²/s = 10,000 St
as its primary example.
NIST gives the corresponding relationship:
1 St = 10⁻⁴ m²/s
What Is a Centistoke?
A centistoke is one hundredth of a stoke.
It is commonly written:
cSt
Because stokes are relatively large units for many practical liquids, centistokes are convenient in applications such as lubricants and hydraulic fluids.
Kinematic vs Dynamic Viscosity
These terms should not be confused.
Dynamic viscosity describes resistance to shear.
Kinematic viscosity incorporates density.
This means that two fluids can have related dynamic viscosity values but different kinematic viscosity values if their densities differ.
If you need dynamic viscosity conversions, use the Dynamic Viscosity Converter.
Kinematic Viscosity in Lubricants
Oil specifications often use kinematic viscosity.
This is why centistokes frequently appear in technical data sheets for lubricating oils.
However, viscosity grade selection involves more than simply converting units.
Temperature is particularly important because viscosity changes with temperature.
A converted number should therefore always be interpreted in the context of the measurement temperature and applicable specification.
Where Is Kinematic Viscosity Used?
A kinematic viscosity unit converter is useful for:
- Automotive fluids
- Lubricants
- Petroleum products
- Hydraulic systems
- Fluid mechanics
- Chemical engineering
- Laboratory testing
- Academic work
Limitations
The converter does not measure viscosity.
It only changes the unit attached to an existing measurement.
It also does not predict how a fluid behaves at another temperature or pressure.
For critical engineering applications, use the appropriate fluid property data and standards.
Frequently Asked Questions
What is the SI unit of kinematic viscosity?
m²/s.
What is cSt?
cSt means centistoke.
How many stokes are in 1 m²/s?
1 m²/s equals 10,000 stokes.
Is kinematic viscosity the same as dynamic viscosity?
No. Kinematic viscosity is dynamic viscosity divided by density.
Can I convert cSt to m²/s?
Yes. Enter the value and select the appropriate units.
Key Takeaways
- A Kinematic Viscosity Converter changes kinematic viscosity units.
- The SI unit is m²/s.
- Stokes and centistokes are traditional viscosity units.
- 1 m²/s equals 10,000 St.
- Kinematic viscosity differs from dynamic viscosity.
- Density connects dynamic and kinematic viscosity.
- Temperature should be considered when interpreting viscosity data.
Reference Links
Written and reviewed by the CalculatorKits Editorial Team
Last Updated: September 9, 2026