inH2O (4°C) to Pound/sq inch Converter
Convert inH2O (4°C) (inH2O) to Pound/sq inch (psi) instantly. 1 inH2O = 0.036127 psi.
Pressure Converter
29 units available
1 inH2O = 0.036127 psi
Formula:
psi = inH2O × 0.0361272918With your value: 1 inH2O = 0.03612729 psi
Other inH2O (4°C) to Pound/sq inch conversions
inH2O (4°C) to Pound/sq inch Conversion Table
| inH2O (4°C) (inH2O) | Pound/sq inch (psi) |
|---|---|
| 0.5 | 0.018064 |
| 1 | 0.036127 |
| 2 | 0.072255 |
| 5 | 0.180636 |
| 10 | 0.361273 |
| 15 | 0.541909 |
| 20 | 0.722546 |
| 25 | 0.903182 |
| 50 | 1.806365 |
| 100 | 3.612729 |
| 250 | 9.031823 |
| 500 | 18.063646 |
| 1000 | 36.127292 |
Pound/sq inch to inH2O (4°C) Conversion Table
| Pound/sq inch (psi) | inH2O (4°C) (inH2O) |
|---|---|
| 0.5 | 13.839952 |
| 1 | 27.679905 |
| 2 | 55.35981 |
| 5 | 138.399524 |
| 10 | 276.799049 |
| 15 | 415.198573 |
| 20 | 553.598098 |
| 25 | 691.997622 |
| 50 | 1,383.995245 |
| 100 | 2,767.99049 |
| 250 | 6,919.976224 |
| 500 | 13,839.952448 |
| 1000 | 27,679.904895 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
inH2O (4°C) (inH2O)
Pressure
Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Pound/sq inch (psi)
Pressure
1 psi = 1 lbf/in² = 6894.757 293 168 361 Pa exactly.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert inH2O (4°C) to Pound/sq inch
To convert from inH2O (4°C) (inH2O) to Pound/sq inch (psi), multiply the value by 0.0361272918.
Formula: psi = inH2O × 0.0361272918
Reverse: inH2O = psi × 27.6799048954
Step-by-Step Example
- Start with your value in inH2O (4°C). For example: 5 inH2O
- Multiply by the conversion factor: 5 x 0.0361272918
- The result is: 0.180636 psi
About inH2O (4°C)
The inh2o (4°c) (inH2O) is a unit of pressure and stress. One inh2o (4°c) equals 249.0889083 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: pressure calculations, engineering and science, education.
About Pound/sq inch
Pounds per square inch (psi) is an imperial unit of pressure widely used in the US for tire pressure, hydraulics, and engineering.
Common uses: tire pressure (US), hydraulics, HVAC.
Frequently Asked Questions
How many Pound/sq inch are in 1 inH2O (4°C)?
There are exactly 0.0361272918 Pound/sq inch in 1 inH2O (4°C). This means the conversion factor from inH2O (4°C) to Pound/sq inch is 0.0361272918.
What is the formula to convert inH2O (4°C) to Pound/sq inch?
The formula to convert inH2O (4°C) to Pound/sq inch is: psi = inH2O × 0.0361272918. For example, to convert 10 inH2O (4°C) to Pound/sq inch, you would multiply 10 by 0.0361272918.
What is a inH2O (4°C)?
The inh2o (4°c) (inH2O) is a unit of pressure and stress. One inh2o (4°c) equals 249.0889083 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Pound/sq inch?
Pounds per square inch (psi) is an imperial unit of pressure widely used in the US for tire pressure, hydraulics, and engineering.
What are the common uses of inH2O (4°C)?
The inH2O (4°C) is commonly used in pressure calculations, engineering and science, education.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). inH2O (4°C) to Pound/sq inch converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/inh2o-to-psi