square inch per second to stokes
Convert square inch per second (in²/s) to stokes (St). Use an editable kinematic viscosity converter, conversion formula, and reference table.
1 in²/s = 6.4516 St
Conversion formula
One square inch per second equals 6.4516 stokes. Multiply your value in square inch per second by this factor to get stokes. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 square inch per second:5 × 6.4516 = 32.258 St
Conversion table
| square inch per second (in²/s) | stokes (St) |
|---|---|
| 0.01 | 0.064516 |
| 0.1 | 0.64516 |
| 1 | 6.4516 |
| 2 | 12.9032 |
| 5 | 32.258 |
| 10 | 64.516 |
| 25 | 161.29 |
| 50 | 322.58 |
| 100 | 645.16 |
| 1000 | 6,451.6 |
About these measurements
Kinematic viscosity is dynamic viscosity divided by density.
The base reference used here is the square meter per second. One square inch per second is 0.00064516 base units; one stokes is 0.0001 base units.
Important distinctions
Compound units must match the quantity and dimension. Temperature intervals use size factors rather than temperature offsets. Calorie and BTU entries use the explicit definitions shown.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert in²/s to St?
Multiply the quantity in in²/s by 6.4516. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the stokes to square inch per second converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
