Inches per Hour to Centimetres per Hour (in/h to cm/h)
1 inch per hour (in/h) = 2.54 centimetres per hour (cm/h). 1 cm/h = 0.3937007874 in/h. Example: 15 in/h = 15 × 2.54 = 38.1 cm/h.
Also searched as inches per hour to cm/h, inches per hour in cm/h, inches per hour into centimetres per hour, in/h to cm/h, in/h in centimetres per hour, in/h into centimetre per hour, inch per hour to centimetre per hour, in/h to centimetres per hour converter, inches per hour to centimeters per hour and how many centimetres per hour in an inch per hour.
1 in/h = 2.54 cm/h
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk inch per hour to centimetre per hour converter to paste a column from Excel.
How to Convert Inch per Hour to Centimetre per Hour
- 1 in/h = 2.54 cm/h
- 1 cm/h = 0.3937007874 in/h
- Example: convert 15 in/h to cm/h: 15 in/h = 15 × 2.54 cm/h = 38.1 cm/h
Formula
cm/h = in/h × 2.54
Derivation from SI units:
- 1 in/h = 0.0254/3600 m/s.
- 1 cm/h = 0.01/3600 m/s.
- 1 in/h = 0.000007055555555556 m/s ÷ 0.000002777777777778 m/s per cm/h = 2.54 cm/h
Both units are defined exactly, so the factor is exact. Inch per Hour definition: inch per hour; Centimetre per Hour definition: centimetre per hour.
Worked examples
- A reading of 0.5 in/h converts to 1.27 cm/h.
0.5 in/h × 2.54 = 1.27 cm/h - A value of 3 in/h is 7.62 cm/h.
3 in/h × 2.54 = 7.62 cm/h
Inch per Hour to Centimetre per Hour conversion table
| Inches per Hour (in/h) | Centimetres per Hour (cm/h) |
|---|---|
| 0.05 in/h | 0.127 cm/h |
| 0.1 in/h | 0.254 cm/h |
| 0.2 in/h | 0.508 cm/h |
| 0.5 in/h | 1.27 cm/h |
| 1 in/h | 2.54 cm/h |
| 2 in/h | 5.08 cm/h |
| 3 in/h | 7.62 cm/h |
| 5 in/h | 12.7 cm/h |
| 10 in/h | 25.4 cm/h |
| 20 in/h | 50.8 cm/h |
Where it's used
Inches per Hour are used for USDA soil survey permeability classes, while centimetres per hour appear in infiltration capacity and Horton’s equation. Both measure hydraulic conductivity (coefficient of permeability k), so the conversion is a fixed factor.
Inch per Hour to other hydraulic conductivity units
| Conversion | 1 in/h equals |
|---|---|
| inch per hour to centimetre per hour | 2.54 cm/h |
| inch per hour to metre per second | 0.000007055555556 m/s |
| inch per hour to centimetre per second | 0.0007055555556 cm/s |
| inch per hour to metre per day | 0.6096 m/day |
| inch per hour to millimetre per hour | 25.4 mm/h |
| inch per hour to foot per day | 2 ft/day |
| inch per hour to gpd/ft² | 14.96103896 gpd/ft² |
Frequently asked questions
How many centimetres per hour are in 1 inch per hour?
1 in/h = 2.54 cm/h.
How do I convert inches per hour to centimetres per hour?
Multiply the value in in/h by 2.54. For example, 15 in/h × 2.54 = 38.1 cm/h.
Is the in/h to cm/h conversion exact?
Yes. Both units are defined exactly, and 1 in/h is exactly 2.54 cm/h.
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, "inch".
- 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). Inches per Hour to Centimetres per Hour (in/h to cm/h). Retrieved October 29, 2026, from https://scientificconverters.com/hydraulic-conductivity/inches-per-hour-to-centimeters-per-hour/
IEEE
Scientific Converters, "Inches per Hour to Centimetres per Hour (in/h to cm/h)," scientificconverters.com. Accessed: Oct. 29, 2026. [Online]. Available: https://scientificconverters.com/hydraulic-conductivity/inches-per-hour-to-centimeters-per-hour/