Convert kilopascal to inch of water column

1 kPa = 4.014630787 in w.g.

1 kPa = 4.01 in w.g.

1 kPa in every pressure unit

pascal	1,000 Pa
kilopascal	1 kPa
megapascal	0.001 MPa
bar	0.01 bar
atmosphere	0.00987 atm
millimeter of mercury	7.5 mmHg
pound per square inch	0.145 psi
foot of water column	0.335 ft H₂O
gigapascal	0.000001 GPa
kip per square inch	0.000145 ksi
inch of mercury	0.295 inHg
inch of water column	4.01 in w.g.

How the conversion works

Multiply by 4.014630787 to go from kilopascal to inch of water column, or divide by it to go back. Every conversion on this site routes through the SI value (Pa) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.

Going the other way? inch of water column to kilopascal — 1 in w.g. = 0.2490889083 kPa.

kilopascal to inch of water column — common values

1 kPa	4.0146308 in w.g.
2 kPa	8.0292616 in w.g.
3 kPa	12.043892 in w.g.
5 kPa	20.073154 in w.g.
10 kPa	40.146308 in w.g.
15 kPa	60.219462 in w.g.
20 kPa	80.292616 in w.g.
25 kPa	100.36577 in w.g.
50 kPa	200.73154 in w.g.
75 kPa	301.09731 in w.g.
100 kPa	401.46308 in w.g.
250 kPa	1,003.6577 in w.g.
500 kPa	2,007.3154 in w.g.
1000 kPa	4,014.6308 in w.g.

Other pressure conversions

Pa → in w.g.kPa → Pa kPa → MPa kPa → bar kPa → atm kPa → psi kPa → mmHg kPa → inHg

All pressure units →

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