Convert Centimetres per Second to Millimetres per Hour
1 centimetre per second (cm/s) = 36000 millimetres per hour (mm/h). 1 mm/h = 0.00002777777778 cm/s. Example: 15 cm/s = 15 × 36000 = 540000 mm/h.
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1 cm/s = 36000 mm/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk centimetre per second to millimetre per hour converter to paste a column from Excel.
How to Convert Centimetre per Second to Millimetre per Hour
- 1 cm/s = 36000 mm/h
- 1 mm/h = 0.00002777777778 cm/s
- Example: convert 15 cm/s to mm/h: 15 cm/s = 15 × 36000 mm/h = 540000 mm/h
Formula
mm/h = cm/s × 36000
Derivation from SI units:
- 1 cm/s = 0.01 m/s.
- 1 mm/h = 0.001/3600 m/s.
- 1 cm/s = 0.01 m/s ÷ 2.777777777778 × 10⁻⁷ m/s per mm/h = 36000 mm/h
Both units are defined exactly, so the factor is exact. Centimetre per Second definition: centimetre per second; Millimetre per Hour definition: millimetre per hour.
Worked examples
- A reading of 0.0001 cm/s converts to 3.6 mm/h.
0.0001 cm/s × 36000 = 3.6 mm/h - A value of 0.1 cm/s is 3600 mm/h.
0.1 cm/s × 36000 = 3600 mm/h
Centimetre per Second to Millimetre per Hour conversion table
| Centimetres per Second (cm/s) | Millimetres per Hour (mm/h) |
|---|---|
| 0.0000001 cm/s | 0.0036 mm/h |
| 0.000001 cm/s | 0.036 mm/h |
| 0.00001 cm/s | 0.36 mm/h |
| 0.0001 cm/s | 3.6 mm/h |
| 0.001 cm/s | 36 mm/h |
| 0.01 cm/s | 360 mm/h |
| 0.1 cm/s | 3600 mm/h |
| 1 cm/s | 36000 mm/h |
| 10 cm/s | 360000 mm/h |
| 100 cm/s | 3600000 mm/h |
Where it's used
Centimetres per Second are used for constant-head and falling-head permeability tests, 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.
Centimetre per Second to other hydraulic conductivity units
| Conversion | 1 cm/s equals |
|---|---|
| centimetre per second to millimetre per hour | 36000 mm/h |
| centimetre per second to metre per second | 0.01 m/s |
| centimetre per second to metre per day | 864 m/day |
| centimetre per second to centimetre per hour | 3600 cm/h |
| centimetre per second to foot per day | 2834.645669 ft/day |
| centimetre per second to inch per hour | 1417.322835 in/h |
| centimetre per second to gpd/ft² | 21204.62215 gpd/ft² |
Frequently asked questions
How many millimetres per hour are in 1 centimetre per second?
1 cm/s = 36000 mm/h.
How do I convert centimetres per second to millimetres per hour?
Multiply the value in cm/s by 36000. For example, 15 cm/s × 36000 = 540000 mm/h.
Is the cm/s to mm/h conversion exact?
Yes. Both units are defined exactly, and 1 cm/s is exactly 36000 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). Convert Centimetres per Second to Millimetres per Hour. Retrieved October 29, 2026, from https://scientificconverters.com/hydraulic-conductivity/centimeters-per-second-to-millimeters-per-hour/
IEEE
Scientific Converters, "Convert Centimetres per Second to Millimetres per Hour," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/hydraulic-conductivity/centimeters-per-second-to-millimeters-per-hour/