square meter per day
Diffusivityexact by definition
The square metre per day is exactly 1/86400 m²/s. It is the standard unit of the coefficient of consolidation in geotechnical practice: typical clays fall between about 0.1 and 10 m²/day, and settlement-time calculations using Terzaghi's theory are worked in these units throughout.
Watch out: Consolidation coefficients are reported in a mess of units across the literature, including cm²/s, m²/year and ft²/day, and they span several orders of magnitude between soils. Always check the unit on a tabulated value before putting it into a time factor, since the answer is a settlement duration and the error compounds directly.
| 1 | 11.574074 |
One square meter per day in every diffusivity unit
| 11,574,100 | square micrometer per second (μm²/s) | |
| 365.25 | square meter per year (m²/yr) | |
| 11.5741 | square millimeter per second (mm²/s) | |
| 11.5741 | centistokes (cSt) | |
| 10.7639 | square foot per day (ft²/d) | |
| 1 | square meter per day (m²/d)this unit | |
| 0.448496 | square foot per hour (ft²/h) | |
| 0.115741 | square centimeter per second (cm²/s) | |
| 0.115741 | stokes (St) | |
| 0.0416667 | square meter per hour (m²/h) | |
| 0.0179399 | square inch per second (in²/s) | |
| 0.000124582 | square foot per second (ft²/s) | |
| 0.0000115741 | square meter per second (m²/s) |
Solvers that use diffusivity