PSI to Inches of Water
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psi
inH2O
Quick reference
| PSI (psi) | Inches of Water (inH2O) |
|---|
Formula
Inches of Water = psi × 27.679906
Multiply the psi value by 27.67990557591865 to get inches of water. To reverse — divide inches of water by 27.67990557591865 to get psi.
About this conversion
Pounds per square inch (psi) is an imperial pressure unit widely used in the US for tire pressure, hydraulics, and gas pressure. Learn more →
Inches of water column (inH₂O) is used in HVAC and low-pressure measurement, equal to approximately 249 pascals. Learn more →
Source: NIST International Reference