STRUCTURAL
Pressure & stress
Pressure, material stress and fluid head.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result345.316 mmH₂O1 inHg = 345.316 mmH₂O
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inHg to mmH₂O Converter
Convert inch of mercury, conventional (inHg) to millimetre of water, conventional (mmH₂O). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through pascal
Enter a inch of mercury, conventional value to calculate millimetre of water, conventional with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| pascalfrom inHg | Pa | 3386.39 |
| hectopascalfrom inHg | hPa | 33.8639 |
| kilopascalfrom inHg | kPa | 3.38639 |
| megapascalfrom inHg | MPa | 0.00338639 |
| gigapascalfrom inHg | GPa | 0.00000338639 |
| millibarfrom inHg | mbar | 33.8639 |
| barfrom inHg | bar | 0.0338639 |
| standard atmospherefrom inHg | atm | 0.0334211 |
| torrfrom inHg | Torr | 25.4 |
| millimetre of mercuryfrom inHg | mmHg | 25.4 |
| inch of mercury, conventionalfrom inHg | inHg | 1 |
| millimetre of water, conventionalfrom inHg | mmH₂O | 345.316 |
| inch of water, conventionalfrom inHg | inH₂O | 13.5951 |
| pound-force per square footfrom inHg | psf | 70.7262 |
| pound-force per square inchfrom inHg | psi | 0.491154 |
| kilopound-force per square inchfrom inHg | ksi | 0.000491154 |
| kilogram-force per square centimetrefrom inHg | kgf/cm² | 0.0345316 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
inHg to mmH₂O Conversion Reference
Inch Of Mercury, Conventional (inHg) and millimetre of water, conventional (mmH₂O) are units of pressure & stress. Use this page to convert in either direction.
Conversion Examples
| Inch Of Mercury, Conventional (inHg) | Millimetre Of Water, Conventional (mmH₂O) |
|---|---|
| 1 inHg | 345.316 mmH₂O |
| 5 inHg | 1726.58 mmH₂O |
| 10 inHg | 3453.16 mmH₂O |
| 100 inHg | 34531.6 mmH₂O |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
mmH₂O to inHg (millimetre of water, conventional to inch of mercury, conventional)
Related Pressure & stress Conversions
inHg to Pa (inch of mercury, conventional to pascal)inHg to hPa (inch of mercury, conventional to hectopascal)inHg to kPa (inch of mercury, conventional to kilopascal)inHg to MPa (inch of mercury, conventional to megapascal)inHg to GPa (inch of mercury, conventional to gigapascal)inHg to mbar (inch of mercury, conventional to millibar)inHg to bar (inch of mercury, conventional to bar)inHg to atm (inch of mercury, conventional to standard atmosphere)inHg to Torr (inch of mercury, conventional to torr)inHg to mmHg (inch of mercury, conventional to millimetre of mercury)inHg to inH₂O (inch of mercury, conventional to inch of water, conventional)inHg to psf (inch of mercury, conventional to pound-force per square foot)inHg to psi (inch of mercury, conventional to pound-force per square inch)inHg to ksi (inch of mercury, conventional to kilopound-force per square inch)inHg to kgf/cm² (inch of mercury, conventional to kilogram-force per square centimetre)