Kilopascal to inH2O (4°C) Converter

Pressure Converter

29 units available

Decimals:

From

To

4.014631

1 kPa = 4.014631 inH2O

Formula:

inH2O = kPa × 4.0146307866

With your value: 1 kPa = 4.01463079 inH2O

Other Kilopascal to inH2O (4°C) conversions

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

Kilopascal to inH2O (4°C) Conversion Table

Kilopascal (kPa)	inH2O (4°C) (inH2O)
0.5	2.007315
1	4.014631
2	8.029262
5	20.073154
10	40.146308
15	60.219462
20	80.292616
25	100.36577
50	200.731539
100	401.463079
250	1,003.657697
500	2,007.315393
1000	4,014.630787

inH2O (4°C) to Kilopascal Conversion Table

inH2O (4°C) (inH2O)	Kilopascal (kPa)
0.5	0.124544
1	0.249089
2	0.498178
5	1.245445
10	2.490889
15	3.736334
20	4.981778
25	6.227223
50	12.454445
100	24.908891
250	62.272227
500	124.544454
1000	249.088908

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.

Kilopascal (kPa)

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 Kilopascal to inH2O (4°C)

To convert from Kilopascal (kPa) to inH2O (4°C) (inH2O), multiply the value by 4.0146307866.

Formula: inH2O = kPa × 4.0146307866

Reverse: kPa = inH2O × 0.2490889083

Step-by-Step Example

Start with your value in Kilopascal. For example: 5 kPa
Multiply by the conversion factor: 5 x 4.0146307866
The result is: 20.073154 inH2O

About Kilopascal

The kilopascal (kPa) is a unit of pressure and stress. One kilopascal equals 1000 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 Kilopascal?

There are exactly 4.0146307866 inH2O (4°C) in 1 Kilopascal. This means the conversion factor from Kilopascal to inH2O (4°C) is 4.0146307866.

What is the formula to convert Kilopascal to inH2O (4°C)?

The formula to convert Kilopascal to inH2O (4°C) is: inH2O = kPa × 4.0146307866. For example, to convert 10 Kilopascal to inH2O (4°C), you would multiply 10 by 4.0146307866.

What is a Kilopascal?