Convert Barye to Inches of Water
Convert Barye (Ba) to Inches of Water (inH₂O) instantly and accurately.
Conversion Formula
inH₂O = Ba × 0.000401463076
About Barye
The barye (Ba) is the CGS unit of pressure - 1 dyne/cm² = exactly 0.1 Pa = 1 µbar. Standard atmosphere = 1,013,250 Ba. It dominated physics and laboratory science from the mid-19th century until SI adoption. Legacy acoustic CGS literature used 1 barye (0.1 Pa) as the underwater reference pressure, creating a 100 dB offset versus the modern 1 µPa reference - a critical correction when comparing historical and modern underwater acoustics databases. Still encountered in classical fluid mechanics derivations and early 20th-century meteorological literature. 1 Ba = 0.1 Pa.
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
| Barye (Ba) | Inches of Water (inH₂O) |
|---|---|
| 1 Ba | 0.000401463 inH₂O |
| 2 Ba | 0.000802926 inH₂O |
| 5 Ba | 0.00200732 inH₂O |
| 10 Ba | 0.00401463 inH₂O |
| 25 Ba | 0.0100366 inH₂O |
| 50 Ba | 0.0200732 inH₂O |
| 100 Ba | 0.0401463 inH₂O |