ftH2O (4°C) to Kilopound/sq inch Converter

Pressure Converter

29 units available

Decimals:

From

To

0.000434

1 ftH2O = 0.000434 ksi

Formula:

ksi = ftH2O × 0.0004335275

With your value: 1 ftH2O = 0.00043353 ksi

Other ftH2O (4°C) to Kilopound/sq inch conversions

2 ftH2O to ksi 3 ftH2O to ksi 4 ftH2O to ksi 5 ftH2O to ksi 6 ftH2O to ksi 7 ftH2O to ksi 8 ftH2O to ksi

ftH2O (4°C) to Kilopound/sq inch Conversion Table

ftH2O (4°C) (ftH2O)	Kilopound/sq inch (ksi)
0.5	0.000217
1	0.000434
2	0.000867
5	0.002168
10	0.004335
15	0.006503
20	0.008671
25	0.010838
50	0.021676
100	0.043353
250	0.108382
500	0.216764
1000	0.433528

Kilopound/sq inch to ftH2O (4°C) Conversion Table

Kilopound/sq inch (ksi)	ftH2O (4°C) (ftH2O)
0.5	1,153.329371
1	2,306.658741
2	4,613.317483
5	11,533.293706
10	23,066.587413
15	34,599.881119
20	46,133.174826
25	57,666.468532
50	115,332.937064
100	230,665.874128
250	576,664.685321
500	1,153,329.370642
1000	2,306,658.741284

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.

ftH2O (4°C) (ftH2O)

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

Kilopound/sq inch (ksi)

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 ftH2O (4°C) to Kilopound/sq inch

To convert from ftH2O (4°C) (ftH2O) to Kilopound/sq inch (ksi), multiply the value by 0.0004335275.

Formula: ksi = ftH2O × 0.0004335275

Reverse: ftH2O = ksi × 2,306.6587412841

Step-by-Step Example

Start with your value in ftH2O (4°C). For example: 5 ftH2O
Multiply by the conversion factor: 5 x 0.0004335275
The result is: 0.002168 ksi

About ftH2O (4°C)

The fth2o (4°c) (ftH2O) is a unit of pressure and stress. One fth2o (4°c) equals 2989.0669 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 Kilopound/sq inch

The kilopound/sq inch (ksi) is a unit of pressure and stress. One kilopound/sq inch equals 6.894757 × 10^+6 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 Kilopound/sq inch are in 1 ftH2O (4°C)?

There are exactly 0.0004335275 Kilopound/sq inch in 1 ftH2O (4°C). This means the conversion factor from ftH2O (4°C) to Kilopound/sq inch is 0.0004335275.

What is the formula to convert ftH2O (4°C) to Kilopound/sq inch?

The formula to convert ftH2O (4°C) to Kilopound/sq inch is: ksi = ftH2O × 0.0004335275. For example, to convert 10 ftH2O (4°C) to Kilopound/sq inch, you would multiply 10 by 0.0004335275.

What is a ftH2O (4°C)?