Convert Gigapascals to Inches of Water (GPa to inH2O)
1 gigapascal (GPa) = 4014630.76 inches of water (inH₂O). 1 inH₂O = 2.4908891 × 10⁻⁷ GPa. Example: 15 GPa = 15 × 4014630.76 = 60219461.4 inH₂O.
Also searched as gigapascals to inH2O, gigapascals in inH2O, gigapascals into inches of water, GPa to inH2O, GPa in inches of water, GPa into inch of water, gigapascal to inch of water, GPa to inches of water converter and how many inches of water in a gigapascal.
1 GPa = 4014630.76 inH₂O
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigapascal to inch of water converter to paste a column from Excel.
How to Convert Gigapascal to Inch of Water
- 1 GPa = 4014630.76 inH₂O
- 1 inH₂O = 2.4908891 × 10⁻⁷ GPa
- Example: convert 15 GPa to inH₂O: 15 GPa = 15 × 4014630.76 inH₂O = 60219461.4 inH₂O
Reference conditions. inH₂O: Conventional water column: ρ = 1000 kg/m³ and gₙ = 9.80665 m/s² (≈ water at 4 °C).
Formula
inH₂O = GPa × 4014630.759756
Derivation from SI units:
- 1 GPa = 10⁹ Pa = 1000 MPa = 1 kN/mm²
- 1 inH₂O = 1000 kg/m³ × 9.80665 m/s² × 0.0254 m = 249.08891 Pa
- 1 GPa = 1000000000 Pa ÷ 249.08891 Pa per inH₂O = 4014630.759756 inH₂O
Both units are defined exactly, so the factor is exact. Gigapascal definition: gigapascal; Inch of Water definition: inch of water.
Worked examples
- A reading of 10 GPa converts to 40146307.6 inH₂O.
10 GPa × 4014630.76 = 40146307.6 inH₂O - A value of 190 GPa is 762779844.4 inH₂O.
190 GPa × 4014630.76 = 762779844.4 inH₂O
Gigapascal to Inch of Water conversion table
| Gigapascals (GPa) | Inches of Water (inH₂O) |
|---|---|
| 0.5 GPa | 2007315.38 inH₂O |
| 1 GPa | 4014630.76 inH₂O |
| 2 GPa | 8029261.52 inH₂O |
| 3 GPa | 12043892.28 inH₂O |
| 5 GPa | 20073153.8 inH₂O |
| 10 GPa | 40146307.6 inH₂O |
| 45 GPa | 180658384.2 inH₂O |
| 70 GPa | 281024153.2 inH₂O |
| 110 GPa | 441609383.6 inH₂O |
| 117 GPa | 469711798.9 inH₂O |
| 190 GPa | 762779844.4 inH₂O |
| 200 GPa | 802926152 inH₂O |
| 210 GPa | 843072459.5 inH₂O |
| 400 GPa | 1605852304 inH₂O |
| 1000 GPa | 4014630760 inH₂O |
Where it's used
Gigapascals are used for young's modulus and shear modulus of metals, ceramics and composites, while inches of water appear in HVAC total external static pressure (residential ≈ 0.5 inH₂O). Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Gigapascal to other pressure units
| Conversion | 1 GPa equals |
|---|---|
| gigapascal to inch of water | 4014630.76 inH₂O |
| gigapascal to pascal | 1000000000 Pa |
| gigapascal to kilopascal | 1000000 kPa |
| gigapascal to ksi | 145.0377377 ksi |
| gigapascal to kilogram-force per square centimetre | 10197.16213 kgf/cm² |
| gigapascal to psi | 145037.7377 psi |
| gigapascal to bar | 10000 bar |
| gigapascal to millimeter of mercury | 7500615.758 mmHg |
Show 12 more units
| gigapascal to atmosphere | 9869.232667 atm |
|---|---|
| gigapascal to megapascal | 1000 MPa |
| gigapascal to newton per square millimetre | 1000 N/mm² |
| gigapascal to kilogram-force per square millimetre | 101.9716213 kgf/mm² |
| gigapascal to millibar | 10000000 mbar |
| gigapascal to torr | 7500616.827 Torr |
| gigapascal to millimeter of water | 101971621.3 mmH₂O |
| gigapascal to centimeter of water | 10197162.13 cmH₂O |
| gigapascal to inch of mercury | 295299.833 inHg |
| gigapascal to decibar | 100000 dbar |
| gigapascal to inch of water (60 °F) | 4018646.52 inH₂O (60 °F) |
| gigapascal to barye | 10000000000 Ba |
Frequently asked questions
How many inches of water are in 1 gigapascal?
1 GPa = 4014630.76 inH₂O.
How do I convert gigapascals to inches of water?
Multiply the value in GPa by 4014630.76. For example, 15 GPa × 4014630.76 = 60219461.4 inH₂O.
Is the GPa to inH₂O conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- 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)".
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 Gigapascals to Inches of Water (GPa to inH2O). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/gigapascal-to-inch-of-water/
IEEE
Scientific Converters, "Convert Gigapascals to Inches of Water (GPa to inH2O)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/gigapascal-to-inch-of-water/