Convert Gigapascals to Inches of Water
Convert Gigapascals (GPa) to Inches of Water (inH₂O) instantly and accurately.
Conversion Formula
inH₂O = GPa × 4014630.76
About Gigapascals
A gigapascal (GPa) = 10⁹ Pa = 10 kbar - the extreme-pressure unit for materials science and planetary physics. Bulk moduli: fused silica 72 GPa; iron 170 GPa; diamond 442 GPa (highest known). Earth's inner core: 330-360 GPa. Jupiter's core: ~40,000-70,000 GPa. NIF laser-shocked experiments create 100-100,000 GPa to reproduce planetary interior conditions. Metallic hydrogen is predicted to form above ~500 GPa and has been tentatively observed at 400-500 GPa in diamond anvil cells. 1 GPa = 10⁹ Pa = 10 kbar.
About Inches of Water
One inch of water column (inH₂O or in WC) = pressure from 1 inch of fresh water at standard gravity ≈ 249.09 Pa. The standard unit for low-pressure measurement in US HVAC and plumbing: ductwork static pressure, fan performance, filter ratings, and gas appliance manifold pressures are all specified in inches WC. Household natural gas supply pressure is typically 7 in WC (0.25 psi). Blower door tests for building air-tightness use 50 Pa ≈ 0.2 in WC test pressure. 1 inH₂O = 249.089 Pa.
Quick Reference Table
| Gigapascals (GPa) | Inches of Water (inH₂O) |
|---|---|
| 1 GPa | 4014630 inH₂O |
| 2 GPa | 8029260 inH₂O |
| 5 GPa | 20073200 inH₂O |
| 10 GPa | 40146300 inH₂O |
| 25 GPa | 100366000 inH₂O |
| 50 GPa | 200732000 inH₂O |
| 100 GPa | 401463000 inH₂O |