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Viscosity

cm²/stoin²/s

Convert square centimetres per second (cm²/s) to square inches per second (in²/s).

Factor1 cm²/s = 0.1550003 in²/s

Converter

cm²/s

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

Result
1.55in²/s

Rendered to 6 significant figures.

Formula

Formula
in²/s = cm²/s × 0.1550003

Multiply any value in square centimetres per second by 0.1550003 to obtain the value in square inches per second.

Worked example

Convert 10 cm²/s to in²/s.

  1. 01Start with 10 cm²/s.
  2. 02Multiply by the conversion factor: 10 × 0.1550003 = 1.55 in²/s.
Result10 cm²/s = 1.55 in²/s

Conversion table

cm²/sin²/s
10.155
20.31
50.775
101.55
203.1
507.75
10015.5
20031
50077.5
1000155

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cm²/s to in²/s?
1 cm²/s equals 0.1550003 in²/s. To convert, multiply the value in square centimetres per second by 0.1550003.
How do I convert 1 cm²/s to in²/s?
1 cm²/s = 0.155 in²/s. For any value, multiply by 0.1550003.
How do I convert in²/s back to cm²/s?
Divide by the same factor — or equivalently, multiply by 6.4516. So 1 in²/s = 6.4516 cm²/s.
When would I need to convert square centimetre per second to square inch per second?
Kinematic viscosity conversions between cm²/s and in²/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).

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