Metre per Second (m/s)
Hydraulic conductivity K in metres per second is the SI unit of Darcy’s law, q = K i: the flow per unit area under a hydraulic gradient of one. Clean gravel is about 10⁻² m/s, sand 10⁻⁵–10⁻³ m/s and clay below 10⁻⁹ m/s.
Symbol: m/s
Quantity: hydraulic conductivity (coefficient of permeability k)
SI relation: m/s is the coherent SI unit of hydraulic conductivity.
Derivation: Hydraulic conductivity K = discharge per unit area per unit hydraulic gradient, in m/s.
Exact: yes, by definition
Typical uses
- Darcy’s law and seepage analysis
- Aquifer and well calculations
- Liner and barrier specifications (k ≤ 10⁻⁹ m/s)
Convert metres per second to other units
| Conversion | 1 m/s equals | Reverse |
|---|---|---|
| metre per second to centimetre per second | 100 cm/s | centimetre per second to metre per second |
| metre per second to metre per day | 86400 m/day | metre per day to metre per second |
| metre per second to centimetre per hour | 360000 cm/h | centimetre per hour to metre per second |
| metre per second to millimetre per hour | 3600000 mm/h | millimetre per hour to metre per second |
| metre per second to foot per day | 283464.5669 ft/day | foot per day to metre per second |
| metre per second to inch per hour | 141732.2835 in/h | inch per hour to metre per second |
| metre per second to gpd/ft² | 2120462.215 gpd/ft² | gpd/ft² to metre per second |
Open the Hydraulic Conductivity Converter (cm/s, m/day) to convert any value between all units.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units) and Table 8 (non-SI units accepted for use with the SI).
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Metre per Second (m/s). Retrieved October 29, 2026, from https://scientificconverters.com/units/meter-per-second-hydraulic/
IEEE
Scientific Converters, "Metre per Second (m/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/units/meter-per-second-hydraulic/