Inches of Water to Inches of Mercury
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inH2O
inhg
Quick reference
| Inches of Water (inH2O) | Inches of Mercury (inhg) |
|---|
Formula
Inches of Mercury = inches of water × 0.073555911
Multiply the inches of water value by 0.07355591057143449 to get inches of mercury. To reverse — divide inches of mercury by 0.07355591057143449 to get inches of water.
About this conversion
Inches of water column (inH₂O) is used in HVAC and low-pressure measurement, equal to approximately 249 pascals. Learn more →
Inches of mercury (inHg) is used in aviation altimetry and US weather reports, equal to approximately 3,386 pascals. Learn more →
Source: NIST International Reference