Convert Pascal-seconds to Poise

Formula

P = Pa·s × 10

Derivation from SI units:

• 1 Pa·s = 1 N·s/m² = 1 kg·m⁻¹·s⁻¹
• 1 P = 1 dyn·s/cm² = 0.1 Pa·s

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

Worked examples

1. A reading of 0.01 Pa·s converts to 0.1 P.
   0.01 Pa·s × 10 = 0.1 P
2. A value of 2.5 Pa·s is 25 P.
   2.5 Pa·s × 10 = 25 P

Where it's used

Pascal-seconds are used for engineering fluid-flow and Reynolds-number calculations, while poise appear in older physics and rheology literature. Both measure dynamic (absolute) viscosity, so the conversion is a fixed factor.

Pascal-second to other dynamic viscosity units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 5, derived units expressed with special names.
• 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)".

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