Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Centistokes to Stokes
Convert cSt to St instantly, then review the formula, assumptions, and rounding guidance.
ViscosityInstant result
Decimals
Formula result = input × 0.000001 ÷ 0.0001. 1 cSt = 0.01 St
Common examples
One value, several units
Square metres per second0 m²/s
Square millimetres per second1 mm²/s
Stokes0.01 St
Square feet per second0 ft²/s
Conversion table
| cSt | St |
|---|---|
| 1 cSt | 0.01 St |
| 2 cSt | 0.02 St |
| 5 cSt | 0.05 St |
| 10 cSt | 0.1 St |
| 25 cSt | 0.25 St |
| 50 cSt | 0.5 St |
| 100 cSt | 1 St |
Conversion chart
1 cSt0.01 St
5 cSt0.05 St
10 cSt0.1 St
25 cSt0.25 St
50 cSt0.5 St
Worked example
1 cSt equals 1 mm²/s.
Unit definition
Centistokes (cSt) One centistokes equals 0.000001 square metre per second.
Unit history
Centistokes is represented here using its modern SI definition or an internationally accepted relationship to an SI base unit.
Step by step
1. Parse the value, including fractions.
2. Convert cSt to square metre per second.
3. Convert the base value to St and apply your display precision.
Understand the result before using it
Centistokes to Stokes converts a value measured in Centistokes (cSt) into the equivalent value in Stokes (St). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 0.000001 ÷ 0.0001
Assumptions
- Centistokes and Stokes represent the same kinematic viscosity quantity.
- The input is expressed in cSt; the output is expressed in St.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 cSt = 0.01 St. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a cSt measurement in a document that expects St.
- Compare a centistokes value with a value reported in stokes.
- Check the cSt-to-St arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Dynamic and kinematic viscosity are different quantities and require density to convert between each other.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Centistokes to Stokes?
result = input × 0.000001 ÷ 0.0001 Using the displayed relationship, 1 cSt equals 0.01 St.
How many Stokes are in one Centistokes?
One Centistokes is 0.01 Stokes. The displayed digits may be rounded.
Can I reverse the cSt to St conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts St back to cSt.
Is the Centistokes to Stokes result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.