# Kinematic Viscosity Converter (m²/s / cSt / ft²/s) Convert kinematic viscosity (ν = dynamic viscosity / density) between m²/s (square metres per second, SI base), cSt (centistokes, 1 cSt = 1e-6 m²/s = 1 mm²/s), and ft²/s (square feet per second, 1 = 0.09290304 m²/s). Converts via m²/s to the target unit and also lists the equivalent value in all three units for reference. Reference values: water 20°C ≈ 1.004 cSt, SAE 30 oil ≈ 300–400 cSt at 40°C. > Canonical page: https://elysiatools.com/en/tools/kinematic-viscosity-converter - **Category:** Math & Numbers - **Keywords:** kinematic viscosity, viscosity conversion, m²/s, square metres per second, cSt, centistokes, stokes, ft²/s, square feet per second, fluid mechanics, lubricant ## Overview Convert non-negative kinematic viscosity values between m²/s, cSt, and ft²/s. Enter a value, choose the input and output units, and receive the converted result plus equivalent values in all three units. ## Inputs - **Input unit** (select) - **Value** (number): Kinematic viscosity in the selected Input unit. Must be non-negative. - **Output unit** (select) - **Decimal Places** (number) ## When to use - Convert laboratory or engineering viscosity measurements between SI, centistokes, and imperial units. - Compare lubricant or fluid specifications reported in different kinematic viscosity units. - Standardize viscosity values for fluid mechanics calculations and technical reports. ## How it works - Enter a non-negative kinematic viscosity value. - Select the input unit: m²/s, cSt, or ft²/s. - Choose the output unit and set the number of decimal places from 0 to 10. - The converter calculates through m²/s and returns the selected result with equivalents in all three units. ## Use cases - Convert lubricant viscosity specifications between cSt and SI units. - Translate fluid property data between metric and imperial engineering references. - Check equivalent viscosity values when reviewing laboratory measurements or equipment documentation. ## Frequently asked questions ### Which kinematic viscosity units are supported? The converter supports m²/s, cSt, and ft²/s. ### What value can I enter? Enter a non-negative numeric kinematic viscosity value. ### How is cSt related to m²/s? 1 cSt equals 1e-6 m²/s, which is also 1 mm²/s. ### How is ft²/s converted to m²/s? 1 ft²/s equals 0.09290304 m²/s. ### Can I control the displayed precision? Yes. Set decimal places from 0 to 10; the default is 6. ## Related tools - [Acre to Square Feet](https://elysiatools.com/en/tools/acre-to-square-feet): Convert acres to square feet with configurable decimal precision - [Acre to Square Meter](https://elysiatools.com/en/tools/acre-to-square-meter): Convert acres to square meters with configurable decimal precision - [Air Changes per Hour (ACH, n = Q/V)](https://elysiatools.com/en/tools/air-changes-per-hour): Compute the air change rate (ACH / n) of a room from the outdoor supply airflow Q and the room volume V: n = Q/V (1/h). 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