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psi to inH₂O Converter

Convert pound-force per square inch (psi) to inch of water, conventional (inH₂O). Enter a value for an instant result, or use the examples and reverse conversion below.

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STRUCTURAL

Pressure & stress

Pressure, material stress and fluid head.

psi
inH₂O

Try a decimal, 1e-9, 1/3, or 5 1/2.

Result27.6799 inH₂O1 psi = 27.6799 inH₂O
HOW IT IS CALCULATED

Convert through pascal

Enter a pound-force per square inch value to calculate inch 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

UnitSymbolConverted value
pascalfrom psiPa6894.76
hectopascalfrom psihPa68.9476
kilopascalfrom psikPa6.89476
megapascalfrom psiMPa0.00689476
gigapascalfrom psiGPa0.00000689476
millibarfrom psimbar68.9476
barfrom psibar0.0689476
standard atmospherefrom psiatm0.068046
torrfrom psiTorr51.7149
millimetre of mercuryfrom psimmHg51.7149
inch of mercury, conventionalfrom psiinHg2.03602
millimetre of water, conventionalfrom psimmH₂O703.07
inch of water, conventionalfrom psiinH₂O27.6799
pound-force per square footfrom psipsf144
pound-force per square inchfrom psipsi1
kilopound-force per square inchfrom psiksi0.001
kilogram-force per square centimetrefrom psikgf/cm²0.070307

SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.

psi to inH₂O Conversion Reference

Pound-force Per Square Inch (psi) and inch of water, conventional (inH₂O) are units of pressure & stress. Use this page to convert in either direction.

Conversion Examples

Pound-force Per Square Inch to Inch Of Water, Conventional
Pound-force Per Square Inch (psi)Inch Of Water, Conventional (inH₂O)
1 psi27.6799 inH₂O
5 psi138.4 inH₂O
10 psi276.799 inH₂O
100 psi2767.99 inH₂O

Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.

Reverse Conversion

inH₂O to psi (inch of water, conventional to pound-force per square inch)

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