Pound/sq foot to inH2O (4°C) Converter

Pressure Converter

29 units available

Decimals:

From

To

0.192222

1 psf = 0.192222 inH2O

Formula:

inH2O = psf × 0.1922215618

With your value: 1 psf = 0.19222156 inH2O

Other Pound/sq foot to inH2O (4°C) conversions

2 psf to inH2O 3 psf to inH2O 4 psf to inH2O 5 psf to inH2O 6 psf to inH2O 7 psf to inH2O 8 psf to inH2O

Pound/sq foot to inH2O (4°C) Conversion Table

Pound/sq foot (psf)	inH2O (4°C) (inH2O)
0.5	0.096111
1	0.192222
2	0.384443
5	0.961108
10	1.922216
15	2.883323
20	3.844431
25	4.805539
50	9.611078
100	19.222156
250	48.05539
500	96.110781
1000	192.221562

inH2O (4°C) to Pound/sq foot Conversion Table

inH2O (4°C) (inH2O)	Pound/sq foot (psf)
0.5	2.601165
1	5.20233
2	10.40466
5	26.01165
10	52.0233
15	78.03495
20	104.0466
25	130.05825
50	260.116501
100	520.233001
250	1,300.582503
500	2,601.165007
1000	5,202.330013

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.

Pound/sq foot (psf)

Pressure

Exact conversion

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

inH2O (4°C) (inH2O)

Pressure

Exact conversion

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

How to Convert Pound/sq foot to inH2O (4°C)

To convert from Pound/sq foot (psf) to inH2O (4°C) (inH2O), multiply the value by 0.1922215618.

Formula: inH2O = psf × 0.1922215618

Reverse: psf = inH2O × 5.2023300132

Step-by-Step Example

Start with your value in Pound/sq foot. For example: 5 psf
Multiply by the conversion factor: 5 x 0.1922215618
The result is: 0.961108 inH2O

About Pound/sq foot

The pound/sq foot (psf) is a unit of pressure and stress. One pound/sq foot equals 47.88025898 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 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.

Frequently Asked Questions

How many inH2O (4°C) are in 1 Pound/sq foot?

There are exactly 0.1922215618 inH2O (4°C) in 1 Pound/sq foot. This means the conversion factor from Pound/sq foot to inH2O (4°C) is 0.1922215618.

What is the formula to convert Pound/sq foot to inH2O (4°C)?

The formula to convert Pound/sq foot to inH2O (4°C) is: inH2O = psf × 0.1922215618. For example, to convert 10 Pound/sq foot to inH2O (4°C), you would multiply 10 by 0.1922215618.

What is a Pound/sq foot?