STRUCTURAL
Pressure & stress
Pressure, material stress and fluid head.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result703.07 mmH₂O1 psi = 703.07 mmH₂O
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psi to mmH₂O Converter
Convert pound-force per square inch (psi) 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 pound-force per square inch 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 psi | Pa | 6894.76 |
| hectopascalfrom psi | hPa | 68.9476 |
| kilopascalfrom psi | kPa | 6.89476 |
| megapascalfrom psi | MPa | 0.00689476 |
| gigapascalfrom psi | GPa | 0.00000689476 |
| millibarfrom psi | mbar | 68.9476 |
| barfrom psi | bar | 0.0689476 |
| standard atmospherefrom psi | atm | 0.068046 |
| torrfrom psi | Torr | 51.7149 |
| millimetre of mercuryfrom psi | mmHg | 51.7149 |
| inch of mercury, conventionalfrom psi | inHg | 2.03602 |
| millimetre of water, conventionalfrom psi | mmH₂O | 703.07 |
| inch of water, conventionalfrom psi | inH₂O | 27.6799 |
| pound-force per square footfrom psi | psf | 144 |
| pound-force per square inchfrom psi | psi | 1 |
| kilopound-force per square inchfrom psi | ksi | 0.001 |
| kilogram-force per square centimetrefrom psi | kgf/cm² | 0.070307 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
psi to mmH₂O Conversion Reference
Pound-force Per Square Inch (psi) and millimetre of water, conventional (mmH₂O) are units of pressure & stress. Use this page to convert in either direction.
Conversion Examples
| Pound-force Per Square Inch (psi) | Millimetre Of Water, Conventional (mmH₂O) |
|---|---|
| 1 psi | 703.07 mmH₂O |
| 5 psi | 3515.35 mmH₂O |
| 10 psi | 7030.7 mmH₂O |
| 100 psi | 70307 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 psi (millimetre of water, conventional to pound-force per square inch)
Related Pressure & stress Conversions
psi to Pa (pound-force per square inch to pascal)psi to hPa (pound-force per square inch to hectopascal)psi to kPa (pound-force per square inch to kilopascal)psi to MPa (pound-force per square inch to megapascal)psi to GPa (pound-force per square inch to gigapascal)psi to mbar (pound-force per square inch to millibar)psi to bar (pound-force per square inch to bar)psi to atm (pound-force per square inch to standard atmosphere)psi to Torr (pound-force per square inch to torr)psi to mmHg (pound-force per square inch to millimetre of mercury)psi to inHg (pound-force per square inch to inch of mercury, conventional)psi to inH₂O (pound-force per square inch to inch of water, conventional)psi to psf (pound-force per square inch to pound-force per square foot)psi to ksi (pound-force per square inch to kilopound-force per square inch)psi to kgf/cm² (pound-force per square inch to kilogram-force per square centimetre)