Stokes to Square Inch/Second Converter

Kinematic Viscosity Converter

6 units available

Decimals:

From

To

0.155

1 St = 0.155 in²/s

Formula:

in²/s = St × 0.15500031

With your value: 1 St = 0.15500031 in²/s

Other Stokes to Square Inch/Second conversions

2 St to in²/s 3 St to in²/s 4 St to in²/s 5 St to in²/s 6 St to in²/s 7 St to in²/s 8 St to in²/s

Stokes to Square Inch/Second Conversion Table

Stokes (St)	Square Inch/Second (in²/s)
0.5	0.0775
1	0.155
2	0.310001
5	0.775002
10	1.550003
15	2.325005
20	3.100006
25	3.875008
50	7.750016
100	15.500031
250	38.750078
500	77.500155
1000	155.00031

Square Inch/Second to Stokes Conversion Table

Square Inch/Second (in²/s)	Stokes (St)
0.5	3.2258
1	6.4516
2	12.9032
5	32.258
10	64.516
15	96.774
20	129.032
25	161.29
50	322.58
100	645.16
250	1,612.9
500	3,225.8
1000	6,451.6

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Stokes (St)

Kinematic Viscosity

Exact conversion

Derived quantity, square metre per second (m²/s). The stokes is exactly 10⁻⁴ m²/s by CGS definition.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Square Inch/Second (in²/s)

Kinematic Viscosity

Exact conversion

Derived quantity, square metre per second (m²/s). The stokes is exactly 10⁻⁴ m²/s by CGS definition.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Stokes to Square Inch/Second

To convert from Stokes (St) to Square Inch/Second (in²/s), multiply the value by 0.15500031.

Formula: in²/s = St × 0.15500031

Reverse: St = in²/s × 6.4516

Step-by-Step Example

Start with your value in Stokes. For example: 5 St
Multiply by the conversion factor: 5 x 0.15500031
The result is: 0.775002 in²/s

About Stokes

The stokes (St) is a unit of kinematic viscosity. One stokes equals 0.0001 base units. UnitConvertLab converts it against every other kinematic viscosity unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: kinematic viscosity calculations, engineering and science, education.

About Square Inch/Second

The square inch/second (in²/s) is a unit of kinematic viscosity. One square inch/second equals 0.00064516 base units. UnitConvertLab converts it against every other kinematic viscosity unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: kinematic viscosity calculations, engineering and science, education.

Frequently Asked Questions

How many Square Inch/Second are in 1 Stokes?

There are exactly 0.15500031 Square Inch/Second in 1 Stokes. This means the conversion factor from Stokes to Square Inch/Second is 0.15500031.

What is the formula to convert Stokes to Square Inch/Second?

The formula to convert Stokes to Square Inch/Second is: in²/s = St × 0.15500031. For example, to convert 10 Stokes to Square Inch/Second, you would multiply 10 by 0.15500031.

What is a Stokes?