Convert Kilograms-force per Square Millimetre to mmH₂O
1 kilogram-force per square millimetre (kgf/mm²) = 1000000 millimeters of water (mmH₂O). 1 mmH₂O = 0.000001 kgf/mm². Example: 15 kgf/mm² = 15 × 1000000 = 15000000 mmH₂O.
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1 kgf/mm² = 1000000 mmH₂O
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk kilogram-force per square millimetre to millimeter of water converter to paste a column from Excel.
How to Convert Kilogram-force per Square Millimetre to Millimeter of Water
- 1 kgf/mm² = 1000000 mmH₂O
- 1 mmH₂O = 0.000001 kgf/mm²
- Example: convert 15 kgf/mm² to mmH₂O: 15 kgf/mm² = 15 × 1000000 mmH₂O = 15000000 mmH₂O
Reference conditions. mmH₂O: Conventional water column: ρ = 1000 kg/m³ and gₙ = 9.80665 m/s² (≈ water at 4 °C).
Formula
mmH₂O = kgf/mm² × 1000000
Derivation from SI units:
- 1 kgf/mm² = 9.80665 N ÷ 1 mm² = 9.80665 MPa (exact)
- 1 mmH₂O = 1000 kg/m³ × 9.80665 m/s² × 0.001 m = 9.80665 Pa
- 1 kgf/mm² = 9806650 Pa ÷ 9.80665 Pa per mmH₂O = 1000000 mmH₂O
Both units are defined exactly, so the factor is exact. Kilogram-force per Square Millimetre definition: kilogram-force per square millimetre; Millimeter of Water definition: millimeter of water.
Worked examples
- A reading of 24 kgf/mm² converts to 24000000 mmH₂O.
24 kgf/mm² × 1000000 = 24000000 mmH₂O - A value of 50 kgf/mm² is 50000000 mmH₂O.
50 kgf/mm² × 1000000 = 50000000 mmH₂O
Kilogram-force per Square Millimetre to Millimeter of Water conversion table
| Kilograms-force per Square Millimetre (kgf/mm²) | Millimeters of Water (mmH₂O) |
|---|---|
| 1 kgf/mm² | 1000000 mmH₂O |
| 5 kgf/mm² | 5000000 mmH₂O |
| 10 kgf/mm² | 10000000 mmH₂O |
| 20 kgf/mm² | 20000000 mmH₂O |
| 24 kgf/mm² | 24000000 mmH₂O |
| 30 kgf/mm² | 30000000 mmH₂O |
| 36 kgf/mm² | 36000000 mmH₂O |
| 40 kgf/mm² | 40000000 mmH₂O |
| 50 kgf/mm² | 50000000 mmH₂O |
| 60 kgf/mm² | 60000000 mmH₂O |
| 80 kgf/mm² | 80000000 mmH₂O |
| 100 kgf/mm² | 100000000 mmH₂O |
| 120 kgf/mm² | 120000000 mmH₂O |
Where it's used
Kilograms-force per Square Millimetre are used for tensile strength in older JIS and GB steel standards, while millimeters of water appear in fan static pressure and duct design in Asia and Europe. Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Kilogram-force per Square Millimetre to other pressure units
| Conversion | 1 kgf/mm² equals |
|---|---|
| kilogram-force per square millimetre to millimeter of water | 1000000 mmH₂O |
| kilogram-force per square millimetre to pascal | 9806650 Pa |
| kilogram-force per square millimetre to kilopascal | 9806.65 kPa |
| kilogram-force per square millimetre to ksi | 1.422334331 ksi |
| kilogram-force per square millimetre to kilogram-force per square centimetre | 100 kgf/cm² |
| kilogram-force per square millimetre to psi | 1422.334331 psi |
| kilogram-force per square millimetre to bar | 98.0665 bar |
| kilogram-force per square millimetre to millimeter of mercury | 73555.91353 mmHg |
Show 12 more units
| kilogram-force per square millimetre to inch of water | 39370.07874 inH₂O |
|---|---|
| kilogram-force per square millimetre to atmosphere | 96.78411054 atm |
| kilogram-force per square millimetre to megapascal | 9.80665 MPa |
| kilogram-force per square millimetre to gigapascal | 0.00980665 GPa |
| kilogram-force per square millimetre to newton per square millimetre | 9.80665 N/mm² |
| kilogram-force per square millimetre to millibar | 98066.5 mbar |
| kilogram-force per square millimetre to torr | 73555.92401 Torr |
| kilogram-force per square millimetre to centimeter of water | 100000 cmH₂O |
| kilogram-force per square millimetre to inch of mercury | 2895.902107 inHg |
| kilogram-force per square millimetre to decibar | 980.665 dbar |
| kilogram-force per square millimetre to inch of water (60 °F) | 39409.45989 inH₂O (60 °F) |
| kilogram-force per square millimetre to barye | 98066500 Ba |
Frequently asked questions
How many millimeters of water are in 1 kilogram-force per square millimetre?
1 kgf/mm² = 1000000 mmH₂O.
How do I convert kilograms-force per square millimetre to millimeters of water?
Multiply the value in kgf/mm² by 1000000. For example, 15 kgf/mm² × 1000000 = 15000000 mmH₂O.
Is the kgf/mm² to mmH₂O conversion exact?
Yes. Both units are defined exactly, and 1 kgf/mm² is exactly 1000000 mmH₂O.
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, "kilogram-force per square millimeter".
- 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, "millimeter of water, conventional (mmH2O)".
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 Kilograms-force per Square Millimetre to mmH₂O. Retrieved October 25, 2026, from https://scientificconverters.com/pressure/kilogram-force-per-square-millimeter-to-millimeter-of-water/
IEEE
Scientific Converters, "Convert Kilograms-force per Square Millimetre to mmH₂O," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/kilogram-force-per-square-millimeter-to-millimeter-of-water/