Convert Inches of Water to kgf/cm²
1 inch of water (inH₂O) = 0.00254 kilograms-force per square centimetre (kgf/cm²). 1 kgf/cm² = 393.7007874 inH₂O. Example: 15 inH₂O = 15 × 0.00254 = 0.0381 kgf/cm².
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1 inH₂O = 0.00254 kgf/cm²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk inch of water to kilogram-force per square centimetre converter to paste a column from Excel.
How to Convert Inch of Water to Kilogram-force per Square Centimetre
- 1 inH₂O = 0.00254 kgf/cm²
- 1 kgf/cm² = 393.7007874 inH₂O
- Example: convert 15 inH₂O to kgf/cm²: 15 inH₂O = 15 × 0.00254 kgf/cm² = 0.0381 kgf/cm²
Reference conditions. inH₂O: Conventional water column: ρ = 1000 kg/m³ and gₙ = 9.80665 m/s² (≈ water at 4 °C).
Formula
kgf/cm² = inH₂O × 0.00254
or kgf/cm² = inH₂O ÷ 393.7007874016
Derivation from SI units:
- 1 inH₂O = 1000 kg/m³ × 9.80665 m/s² × 0.0254 m = 249.08891 Pa
- 1 kgf/cm² = 9.80665 N ÷ 10⁻⁴ m² = 98 066.5 Pa (exact), also called the technical atmosphere (at)
- 1 inH₂O = 249.08891 Pa ÷ 98066.5 Pa per kgf/cm² = 0.00254 kgf/cm²
Both units are defined exactly, so the factor is exact. Inch of Water definition: inch of water; Kilogram-force per Square Centimetre definition: kilogram-force per square centimetre.
Worked examples
- A reading of 0.3 inH₂O converts to 0.000762 kgf/cm².
0.3 inH₂O × 0.00254 = 0.000762 kgf/cm² - A value of 3 inH₂O is 0.00762 kgf/cm².
3 inH₂O × 0.00254 = 0.00762 kgf/cm²
Inch of Water to Kilogram-force per Square Centimetre conversion table
| Inches of Water (inH₂O) | Kilograms-force per Square Centimetre (kgf/cm²) |
|---|---|
| 0.01 inH₂O | 0.0000254 kgf/cm² |
| 0.02 inH₂O | 0.0000508 kgf/cm² |
| 0.03 inH₂O | 0.0000762 kgf/cm² |
| 0.05 inH₂O | 0.000127 kgf/cm² |
| 0.1 inH₂O | 0.000254 kgf/cm² |
| 0.15 inH₂O | 0.000381 kgf/cm² |
| 0.2 inH₂O | 0.000508 kgf/cm² |
| 0.25 inH₂O | 0.000635 kgf/cm² |
| 0.3 inH₂O | 0.000762 kgf/cm² |
| 0.4 inH₂O | 0.001016 kgf/cm² |
| 0.5 inH₂O | 0.00127 kgf/cm² |
| 0.75 inH₂O | 0.001905 kgf/cm² |
| 1 inH₂O | 0.00254 kgf/cm² |
| 1.5 inH₂O | 0.00381 kgf/cm² |
| 2 inH₂O | 0.00508 kgf/cm² |
| 2.5 inH₂O | 0.00635 kgf/cm² |
| 3 inH₂O | 0.00762 kgf/cm² |
| 4 inH₂O | 0.01016 kgf/cm² |
| 5 inH₂O | 0.0127 kgf/cm² |
| 7 inH₂O | 0.01778 kgf/cm² |
| 10 inH₂O | 0.0254 kgf/cm² |
| 11 inH₂O | 0.02794 kgf/cm² |
| 14 inH₂O | 0.03556 kgf/cm² |
| 20 inH₂O | 0.0508 kgf/cm² |
| 27.7 inH₂O | 0.070358 kgf/cm² |
Where it's used
Inches of Water are used for HVAC total external static pressure (residential ≈ 0.5 inH₂O), while kilograms-force per square centimetre appear in pressure gauges in India, Japan and Latin America. Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Inch of Water to other pressure units
| Conversion | 1 inH₂O equals |
|---|---|
| inch of water to kilogram-force per square centimetre | 0.00254 kgf/cm² |
| inch of water to pascal | 249.08891 Pa |
| inch of water to kilopascal | 0.24908891 kPa |
| inch of water to ksi | 0.000036127292 ksi |
| inch of water to psi | 0.036127292 psi |
| inch of water to bar | 0.0024908891 bar |
| inch of water to millimeter of mercury | 1.868320204 mmHg |
| inch of water to atmosphere | 0.002458316408 atm |
Show 12 more units
| inch of water to megapascal | 0.00024908891 MPa |
|---|---|
| inch of water to gigapascal | 2.4908891 × 10⁻⁷ GPa |
| inch of water to newton per square millimetre | 0.00024908891 N/mm² |
| inch of water to kilogram-force per square millimetre | 0.0000254 kgf/mm² |
| inch of water to millibar | 2.4908891 mbar |
| inch of water to torr | 1.86832047 Torr |
| inch of water to millimeter of water | 25.4 mmH₂O |
| inch of water to centimeter of water | 2.54 cmH₂O |
| inch of water to inch of mercury | 0.07355591353 inHg |
| inch of water to decibar | 0.024908891 dbar |
| inch of water to inch of water (60 °F) | 1.001000281 inH₂O (60 °F) |
| inch of water to barye | 2490.8891 Ba |
Frequently asked questions
How many kilograms-force per square centimetre are in 1 inch of water?
1 inH₂O = 0.00254 kgf/cm².
How do I convert inches of water to kilograms-force per square centimetre?
Multiply the value in inH₂O by 0.00254, or divide it by 393.7007874. For example, 15 inH₂O × 0.00254 = 0.0381 kgf/cm².
Is the inH₂O to kgf/cm² conversion exact?
Yes. Both units are defined exactly, and 1 inH₂O is exactly 0.00254 kgf/cm².
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 of water, conventional (inH2O)".
- 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, "kilogram-force per square centimeter".
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 Inches of Water to kgf/cm². Retrieved October 25, 2026, from https://scientificconverters.com/pressure/inch-of-water-to-kilogram-force-per-square-centimeter/
IEEE
Scientific Converters, "Convert Inches of Water to kgf/cm²," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/inch-of-water-to-kilogram-force-per-square-centimeter/