Convert Square millimeters per second to Square meters per second

The Square millimeter per second (symbol: mm²/s) is a unit of kinematic viscosity. A metric kinematic-viscosity unit numerically equal to the centistoke (1 cSt = 1 mm²/s). Water at 20°C ≈ 1 mm²/s; SAE 30 motor oil ≈ 100 mm²/s at 40°C; heavy gear oil ~1,000 mm²/s. Mm²/s is the standard unit on lubricant datasheets (ISO VG grades use mm²/s at 40°C), hydraulic-fluid specs, and fuel-oil viscosity reports — the practical unit for day-to-day mechanical engineering.

It belongs to the metric measurement system.

Square millimeters per second are commonly used in fluid flow analysis, lubrication engineering, and process design.

The Square meter per second (symbol: m²/s) is a unit of kinematic viscosity. The SI unit of kinematic viscosity — dynamic viscosity divided by density (ν = μ/ρ). Kinematic viscosity captures how "easily" a fluid flows under its own weight. m²/s is the reference unit in fluid mechanics research, CFD solver inputs, and Reynolds-number calculations. Because real-world values are typically 10⁻⁶ to 10⁻³ m²/s, most practical work uses mm²/s (equivalent to centistokes).

It belongs to the metric measurement system.

Square meters per second are commonly used in fluid flow analysis, lubrication engineering, and process design.