Metres per Second to Millimetres per Hour (m/s to mm/h)
1 metre per second (m/s) = 3600000 millimetres per hour (mm/h). 1 mm/h = 2.777777778 × 10⁻⁷ m/s. Example: 15 m/s = 15 × 3600000 = 54000000 mm/h.
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1 m/s = 3600000 mm/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk metre per second to millimetre per hour converter to paste a column from Excel.
How to Convert Metre per Second to Millimetre per Hour
- 1 m/s = 3600000 mm/h
- 1 mm/h = 2.777777778 × 10⁻⁷ m/s
- Example: convert 15 m/s to mm/h: 15 m/s = 15 × 3600000 mm/h = 54000000 mm/h
Formula
mm/h = m/s × 3600000
Derivation from SI units:
- Hydraulic conductivity K = discharge per unit area per unit hydraulic gradient, in m/s.
- 1 mm/h = 0.001/3600 m/s.
Both units are defined exactly, so the factor is exact. Metre per Second definition: metre per second; Millimetre per Hour definition: millimetre per hour.
Worked examples
- A reading of 0.0000001 m/s converts to 0.36 mm/h.
0.0000001 m/s × 3600000 = 0.36 mm/h - A value of 0.0001 m/s is 360 mm/h.
0.0001 m/s × 3600000 = 360 mm/h
Metre per Second to Millimetre per Hour conversion table
| Metres per Second (m/s) | Millimetres per Hour (mm/h) |
|---|---|
| 0.0000000001 m/s | 0.00036 mm/h |
| 0.000000001 m/s | 0.0036 mm/h |
| 0.00000001 m/s | 0.036 mm/h |
| 0.0000001 m/s | 0.36 mm/h |
| 0.000001 m/s | 3.6 mm/h |
| 0.00001 m/s | 36 mm/h |
| 0.0001 m/s | 360 mm/h |
| 0.001 m/s | 3600 mm/h |
| 0.01 m/s | 36000 mm/h |
| 0.1 m/s | 360000 mm/h |
Where it's used
Metres per Second are used for darcy’s law and seepage analysis, 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 Second to other hydraulic conductivity units
| Conversion | 1 m/s equals |
|---|---|
| metre per second to millimetre per hour | 3600000 mm/h |
| metre per second to centimetre per second | 100 cm/s |
| metre per second to metre per day | 86400 m/day |
| metre per second to centimetre per hour | 360000 cm/h |
| metre per second to foot per day | 283464.5669 ft/day |
| metre per second to inch per hour | 141732.2835 in/h |
| metre per second to gpd/ft² | 2120462.215 gpd/ft² |
Frequently asked questions
How many millimetres per hour are in 1 metre per second?
1 m/s = 3600000 mm/h.
How do I convert metres per second to millimetres per hour?
Multiply the value in m/s by 3600000. For example, 15 m/s × 3600000 = 54000000 mm/h.
Is the m/s to mm/h conversion exact?
Yes. Both units are defined exactly, and 1 m/s is exactly 3600000 mm/h.
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 Second to Millimetres per Hour (m/s to mm/h). Retrieved October 29, 2026, from https://scientificconverters.com/hydraulic-conductivity/meters-per-second-to-millimeters-per-hour/
IEEE
Scientific Converters, "Metres per Second to Millimetres per Hour (m/s to mm/h)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/hydraulic-conductivity/meters-per-second-to-millimeters-per-hour/