Metres per Day to Millimetres per Hour (m/day to mm/h)
1 metre per day (m/day) = 41.66666667 millimetres per hour (mm/h). 1 mm/h = 0.024 m/day. Example: 15 m/day = 15 × 41.66666667 = 625 mm/h.
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1 m/day = 41.66666667 mm/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk metre per day to millimetre per hour converter to paste a column from Excel.
How to Convert Metre per Day to Millimetre per Hour
- 1 m/day = 41.66666667 mm/h
- 1 mm/h = 0.024 m/day
- Example: convert 15 m/day to mm/h: 15 m/day = 15 × 41.66666667 mm/h = 625 mm/h
Formula
mm/h = m/day × 41.66666666667
Derivation from SI units:
- 1 m/day = 1/86,400 m/s.
- 1 mm/h = 0.001/3600 m/s.
- 1 m/day = 0.00001157407407407 m/s ÷ 2.777777777778 × 10⁻⁷ m/s per mm/h = 41.66666666667 mm/h
Both units are defined exactly, so the factor is exact. Metre per Day definition: metre per day; Millimetre per Hour definition: millimetre per hour.
Worked examples
- A reading of 0.5 m/day converts to 20.83333333 mm/h.
0.5 m/day × 41.66666667 = 20.83333333 mm/h - A value of 10 m/day is 416.6666667 mm/h.
10 m/day × 41.66666667 = 416.6666667 mm/h
Metre per Day to Millimetre per Hour conversion table
| Metres per Day (m/day) | Millimetres per Hour (mm/h) |
|---|---|
| 0.001 m/day | 0.04166666667 mm/h |
| 0.01 m/day | 0.4166666667 mm/h |
| 0.1 m/day | 4.166666667 mm/h |
| 0.5 m/day | 20.83333333 mm/h |
| 1 m/day | 41.66666667 mm/h |
| 5 m/day | 208.3333333 mm/h |
| 10 m/day | 416.6666667 mm/h |
| 25 m/day | 1041.666667 mm/h |
| 50 m/day | 2083.333333 mm/h |
| 100 m/day | 4166.666667 mm/h |
Where it's used
Metres per Day are used for aquifer transmissivity T = K b (m²/day), while millimetres per hour appear in sprinkler application rate versus infiltration. Both measure hydraulic conductivity (coefficient of permeability k), so the conversion is a fixed factor.
Metre per Day to other hydraulic conductivity units
| Conversion | 1 m/day equals |
|---|---|
| metre per day to millimetre per hour | 41.66666667 mm/h |
| metre per day to metre per second | 0.00001157407407 m/s |
| metre per day to centimetre per second | 0.001157407407 cm/s |
| metre per day to centimetre per hour | 4.166666667 cm/h |
| metre per day to foot per day | 3.280839895 ft/day |
| metre per day to inch per hour | 1.640419948 in/h |
| metre per day to gpd/ft² | 24.54238675 gpd/ft² |
Frequently asked questions
How many millimetres per hour are in 1 metre per day?
1 m/day = 41.66666667 mm/h.
How do I convert metres per day to millimetres per hour?
Multiply the value in m/day by 41.66666667. For example, 15 m/day × 41.66666667 = 625 mm/h.
Is the m/day to mm/h 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
- 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). Metres per Day to Millimetres per Hour (m/day to mm/h). Retrieved October 29, 2026, from https://scientificconverters.com/hydraulic-conductivity/meters-per-day-to-millimeters-per-hour/
IEEE
Scientific Converters, "Metres per Day to Millimetres per Hour (m/day to mm/h)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/hydraulic-conductivity/meters-per-day-to-millimeters-per-hour/