Convert Poise to Millipascal-seconds

Formula

mPa·s = P × 100

Derivation from SI units:

• 1 P = 1 dyn·s/cm² = 0.1 Pa·s
• 1 mPa·s = 10⁻³ Pa·s = 1 cP
• 1 P = 0.1 Pa·s ÷ 0.001 Pa·s per mPa·s = 100 mPa·s

Both units are defined exactly, so the factor is exact. Poise definition: poise; Millipascal-second definition: millipascal-second.

Worked examples

1. A reading of 1 P converts to 100 mPa·s.
   1 P × 100 = 100 mPa·s
2. A value of 10 P is 1000 mPa·s.
   10 P × 100 = 1000 mPa·s

Where it's used

Poise are used for older physics and rheology literature, while millipascal-seconds appear in viscosity of water-like liquids (water ≈ 1 mPa·s at 20 °C). Both measure dynamic (absolute) viscosity, so the conversion is a fixed factor.

Poise to other dynamic viscosity units

Frequently asked questions

Sources

• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "poise (P)".
• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.