▸ processconvert
Viscosity

m²/stomm²/s

Convert square metres per second (m²/s) to square millimetres per second (mm²/s).

Factor1 m²/s = 1000000 mm²/s

Converter

m²/s

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1.00000e+6mm²/s

Rendered to 6 significant figures.

Formula

Formula
mm²/s = m²/s × 1000000

Multiply any value in square metres per second by 1000000 to obtain the value in square millimetres per second.

Worked example

Convert 1 m²/s to mm²/s.

  1. 01Start with 1 m²/s.
  2. 02Multiply by the conversion factor: 1 × 1000000 = 1.00000e+6 mm²/s.
Result1 m²/s = 1.00000e+6 mm²/s

Conversion table

m²/smm²/s
11.0000e+6
22.0000e+6
55.0000e+6
101e+7
202e+7
505e+7
1001e+8
2002e+8
5005e+8
10001e+9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from m²/s to mm²/s?
1 m²/s equals 1000000 mm²/s. To convert, multiply the value in square metres per second by 1000000.
How do I convert 1 m²/s to mm²/s?
1 m²/s = 1.00000e+6 mm²/s. For any value, multiply by 1000000.
How do I convert mm²/s back to m²/s?
Divide by the same factor — or equivalently, multiply by 1e-6. So 1 mm²/s = 1e-6 m²/s.
When would I need to convert square metre per second to square millimetre per second?
Kinematic viscosity conversions between m²/s and mm²/s arise in hydraulic fluid selection, lubricant grading (ISO VG), pipe flow Reynolds number calculations, and fuel-oil specification. Kinematic viscosity equals dynamic viscosity divided by fluid density and cannot be directly compared to dynamic viscosity without that context.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

Related conversions