Convert Square Meters per Second to Stokes

Formula

St = m²/s × 10000

Derivation from SI units:

• 1 m²/s = 1 m² ÷ 1 s
• 1 St = 1 cm²/s = 10⁻⁴ m²/s

Both units are defined exactly, so the factor is exact. Square Meter per Second definition: square meter per second; Stokes definition: stokes.

Worked examples

1. A reading of 0.00001 m²/s converts to 0.1 St.
   0.00001 m²/s × 10000 = 0.1 St
2. A value of 0.0005 m²/s is 5 St.
   0.0005 m²/s × 10000 = 5 St

Where it's used

Square Meters per Second are used for reynolds-number and pipe-flow calculations (Re = vD/ν), while stokes appear in older physics and fluid-mechanics references. Both measure kinematic viscosity (dynamic viscosity divided by density), so the conversion is a fixed factor.

Square Meter per Second to other kinematic viscosity units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 2, coherent derived units.
• 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, "stokes (St)".

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