Convert Feet per Day to Metres per Second (ft/day to m/s)
1 foot per day (ft/day) = 0.000003527777778 metres per second (m/s). 1 m/s = 283464.5669 ft/day. Example: 15 ft/day = 15 × 0.000003527777778 = 0.00005291666667 m/s.
Also searched as feet per day to m/s, feet per day in m/s, feet per day into metres per second, ft/day to m/s, ft/day in metres per second, ft/day into metre per second, foot per day to metre per second, ft/day to metres per second converter, feet per day to meters per second and how many metres per second in a foot per day.
1 ft/day = 0.000003527777778 m/s
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk foot per day to metre per second converter to paste a column from Excel.
How to Convert Foot per Day to Metre per Second
- 1 ft/day = 0.000003527777778 m/s
- 1 m/s = 283464.5669 ft/day
- Example: convert 15 ft/day to m/s: 15 ft/day = 15 × 0.000003527777778 m/s = 0.00005291666667 m/s
Formula
m/s = ft/day × 0.000003527777777778
or m/s = ft/day ÷ 283464.5669291
Derivation from SI units:
- 1 ft/day = 0.3048/86,400 m/s.
- Hydraulic conductivity K = discharge per unit area per unit hydraulic gradient, in m/s.
Both units are defined exactly, so the factor is exact. Foot per Day definition: foot per day; Metre per Second definition: metre per second.
Worked examples
- A reading of 3 ft/day converts to 0.00001058333333 m/s.
3 ft/day × 0.000003527777778 = 0.00001058333333 m/s - A value of 50 ft/day is 0.0001763888889 m/s.
50 ft/day × 0.000003527777778 = 0.0001763888889 m/s
Foot per Day to Metre per Second conversion table
| Feet per Day (ft/day) | Metres per Second (m/s) |
|---|---|
| 0.01 ft/day | 3.527777778 × 10⁻⁸ m/s |
| 0.1 ft/day | 3.527777778 × 10⁻⁷ m/s |
| 1 ft/day | 0.000003527777778 m/s |
| 3 ft/day | 0.00001058333333 m/s |
| 10 ft/day | 0.00003527777778 m/s |
| 30 ft/day | 0.0001058333333 m/s |
| 50 ft/day | 0.0001763888889 m/s |
| 100 ft/day | 0.0003527777778 m/s |
| 300 ft/day | 0.001058333333 m/s |
| 1000 ft/day | 0.003527777778 m/s |
Where it's used
Feet per Day are used for USGS aquifer reports, while metres per second appear in darcy’s law and seepage analysis. Both measure hydraulic conductivity (coefficient of permeability k), so the conversion is a fixed factor.
Foot per Day to other hydraulic conductivity units
| Conversion | 1 ft/day equals |
|---|---|
| foot per day to metre per second | 0.000003527777778 m/s |
| foot per day to centimetre per second | 0.0003527777778 cm/s |
| foot per day to metre per day | 0.3048 m/day |
| foot per day to centimetre per hour | 1.27 cm/h |
| foot per day to millimetre per hour | 12.7 mm/h |
| foot per day to inch per hour | 0.5 in/h |
| foot per day to gpd/ft² | 7.480519481 gpd/ft² |
Frequently asked questions
How many metres per second are in 1 foot per day?
1 ft/day = 0.000003527777778 m/s.
How do I convert feet per day to metres per second?
Multiply the value in ft/day by 0.000003527777778, or divide it by 283464.5669. For example, 15 ft/day × 0.000003527777778 = 0.00005291666667 m/s.
Is the ft/day to m/s conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "foot".
- 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). Convert Feet per Day to Metres per Second (ft/day to m/s). Retrieved October 29, 2026, from https://scientificconverters.com/hydraulic-conductivity/feet-per-day-to-meters-per-second/
IEEE
Scientific Converters, "Convert Feet per Day to Metres per Second (ft/day to m/s)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/hydraulic-conductivity/feet-per-day-to-meters-per-second/