How many meter of waters are in 1 psi?

1 psi equals 0.7030695796 meter of waters, using the exact defined conversion factor rather than an estimate.

How do I convert psi to meter of water?

Multiply the psi value by 0.7030695796. The converter above does this instantly to whatever precision you set.

How do I convert meter of water back to psi?

Use the reverse factor: 1 meter of water equals 1.422334331 psi. You can also use the swap control in the converter above to flip the direction instantly.

What is a meter of water?

Meter of water (mH2O) is a unit of pressure.

Is the psi to meter of water conversion exact?

Yes. PSI (pounds-force per square inch) equals exactly 6,894.757293168 pascals. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.

PSI to Meter of waters Converter

Q: What is a psi?

PSI (psi) measures pressure. PSI (pounds-force per square inch) equals exactly 6,894.757293168 pascals. It is classified as a US/imperial customary unit.

About Converting PSI to Meter of waters

PSI and Meter of water both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. PSI is most often used for tire pressure specifications in the us.

Formula

meter of waters = psi × 0.703069579639

This factor comes from each unit's defined relationship to the category's base unit: 1 psi equals 6894.75729317 base units, and 1 meter of water equals 9806.65 base units, so dividing one by the other gives the direct psi-to-meter of water factor of 0.703069579639.

Simple example

1 psi × 0.7030695796 = 0.7030695796 mH2O

1 psi = 0.7030695796 meter of waters.

Real-world example

35 psi × 0.7030695796 = 24.60743529 mH2O

35 psi = 24.60743529 meter of waters.

Conversion table

PSI (psi)	Meter of water (mH2O)
1 psi	0.7030695796 mH2O
5 psi	3.515347898 mH2O
10 psi	7.030695796 mH2O
25 psi	17.57673949 mH2O
50 psi	35.15347898 mH2O
100 psi	70.30695796 mH2O

Reverse conversion: Meter of water to PSI

0.7030695796 mH2O × 1.422334331 = 0.9999999999 psi

0.7030695796 meter of waters = 0.9999999999 psi.

psi = meter of waters × 1.42233433071

For a page dedicated to this direction, see Meter of water to PSI.

Understanding the PSI

PSI (psi) measures pressure. PSI (pounds-force per square inch) equals exactly 6,894.757293168 pascals. It is classified as a US/imperial customary unit.

Where it's used: United States (standard pressure unit for tires, tools, and plumbing)

Uses of the PSI today

Tire pressure specifications in the US
Hydraulic and pneumatic system ratings
Plumbing, compressed-air tools, and industrial equipment ratings

History of the PSI

PSI is a derived unit from the pound-force and the inch, both themselves standardized through English and later international agreements rather than invented as a pressure unit from scratch.

It became the default pressure unit in US engineering as pound-force and inch-based measurement dominated American industry through the 19th and 20th centuries, and it remains in everyday use for tires and tools even as most other measurements in the US context stay imperial.

Historical origin. PSI was not the invention of a single named person; it developed through the process described above.

Understanding the Meter of water (mH2O)

Meter of water column.

PSI — sources

NIST Special Publication 811 — Guide for the Use of the International System of Units — Documents conversion factors for psi and other US customary pressure units.

PSI to Meter of waters Converter — psi to mH2O

Pressure Converter