Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Poise to Pascal-seconds
Convert P to Pa·s instantly, then review the formula, assumptions, and rounding guidance.
ViscosityInstant result
Decimals
Formula result = input × 0.1 ÷ 1. 1 P = 0.1 Pa·s
Common examples
One value, several units
Pascal-seconds0.1 Pa·s
Millipascal-seconds100 mPa·s
Centipoise100 cP
Conversion table
| P | Pa·s |
|---|---|
| 1 P | 0.1 Pa·s |
| 2 P | 0.2 Pa·s |
| 5 P | 0.5 Pa·s |
| 10 P | 1 Pa·s |
| 25 P | 2.5 Pa·s |
| 50 P | 5 Pa·s |
| 100 P | 10 Pa·s |
Conversion chart
1 P0.1 Pa·s
5 P0.5 Pa·s
10 P1 Pa·s
25 P2.5 Pa·s
50 P5 Pa·s
Worked example
Water near room temperature is about 1 cP.
Unit definition
Poise (P) One poise equals 0.1 pascal-second.
Unit history
Poise 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 P to pascal-second.
3. Convert the base value to Pa·s and apply your display precision.
Understand the result before using it
Poise to Pascal-seconds converts a value measured in Poise (P) into the equivalent value in Pascal-seconds (Pa·s). 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 × 0.1 ÷ 1
Assumptions
- Poise and Pascal-seconds represent the same dynamic viscosity quantity.
- The input is expressed in P; the output is expressed in Pa·s.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 P = 0.1 Pa·s. 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 P measurement in a document that expects Pa·s.
- Compare a poise value with a value reported in pascal-seconds.
- Check the P-to-Pa·s 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 Poise to Pascal-seconds?
result = input × 0.1 ÷ 1 Using the displayed relationship, 1 P equals 0.1 Pa·s.
How many Pascal-seconds are in one Poise?
One Poise is 0.1 Pascal-seconds. The displayed digits may be rounded.
Can I reverse the P to Pa·s conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts Pa·s back to P.
Is the Poise to Pascal-seconds 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.