Inch of water

Physical unit
Unit name	Inches of water column
Unit symbol	${\displaystyle \mathrm {wc,\,WC,\,inAq,\,Aq,\,inH_{2}O} }$
Physical quantity (s)	pressure
dimension	${\displaystyle {\mathsf {M\;L^{-1}\;T^{-2}}}}$
In SI units	${\displaystyle \mathrm {1\,inH_{2}O=248{,}8\;{\frac {N}{m^{2}}}} }$
Derived from	inch
See also: Torr , Pascal , meter of water column

The unit English inches of water , wc , inch water column (inch WC) , inAq , Aq , or inH ₂ O is a non- SI unit for pressure . The unit is used in the Anglo-American system of measurement to measure pressure differences.

It is defined as the pressure of a column of water 1 inch high under standard conditions .

1 inH 2 O	= 248.84 Pa (60 ° F)
	= 2.4884 mbar or hPa (60  ° F )
	= 0.0254 mH 2 O (4 ° C)
	≈ 0.0024558598569 atü
	≈ 1.86645349124 Torr or mmHg (0 ° C)
	≈ 0.0360911906567 PSI

Individual evidence

1. ↑ Robert H. Perry, Don W. Green (Eds.): Perry's Chemical Engineer's Handbook , 7th. Edition, McGraw-Hill, 1997, pp. 1-5.