Inch of Water (60 °F) (inH₂O (60 °F))

The inch of water at 60 °F is the pressure of a 1 inch column of water at 60 °F (15.6 °C) under standard gravity, about 248.84 Pa. It is roughly 0.1 % smaller than the conventional inch of water.

Symbol: inH₂O (60 °F) (ASCII: inH2O (60F))

Quantity: pressure, stress and differential pressure (force per unit area)

SI relation: 1 inH₂O (60 °F) = 248.84 Pa

Derivation: 1 inH₂O (60 °F) ≈ 999.0 kg/m³ × 9.80665 m/s² × 0.0254 m ≈ 248.84 Pa

Exact: no, measured or rounded value

Reference conditions. Water at 60 °F (15.6 °C), density ≈ 999.0 kg/m³, standard gravity. NIST value, 5 significant figures.

Typical uses

Older US gas-industry and flow-meter references
Orifice and differential-pressure flow calculations referenced to 60 °F water
Checking which inH₂O a datasheet means before precise work

Convert inches of water (60 °F) to other units

1 inH₂O (60 °F) in other pressure units
Conversion	1 inH₂O (60 °F) equals	Reverse
inch of water (60 °F) to pascal	248.84 Pa	pascal to inch of water (60 °F)
inch of water (60 °F) to kilopascal	0.24884 kPa	kilopascal to inch of water (60 °F)
inch of water (60 °F) to psi	0.03609119066 psi	psi to inch of water (60 °F)
inch of water (60 °F) to bar	0.0024884 bar	bar to inch of water (60 °F)
inch of water (60 °F) to millimeter of mercury	1.866453225 mmHg	millimeter of mercury to inch of water (60 °F)
inch of water (60 °F) to inch of water	0.9990007183 inH₂O	inch of water to inch of water (60 °F)
inch of water (60 °F) to atmosphere	0.002455859857 atm	atmosphere to inch of water (60 °F)
inch of water (60 °F) to megapascal	0.00024884 MPa	megapascal to inch of water (60 °F)
inch of water (60 °F) to millibar	2.4884 mbar	millibar to inch of water (60 °F)
inch of water (60 °F) to torr	1.866453491 Torr	torr to inch of water (60 °F)
inch of water (60 °F) to millimeter of water	25.37461824 mmH₂O	millimeter of water to inch of water (60 °F)
inch of water (60 °F) to centimeter of water	2.537461824 cmH₂O	centimeter of water to inch of water (60 °F)
inch of water (60 °F) to inch of mercury	0.07348241045 inHg	inch of mercury to inch of water (60 °F)
inch of water (60 °F) to decibar	0.024884 dbar	decibar to inch of water (60 °F)
inch of water (60 °F) to barye	2488.4 Ba	barye to inch of water (60 °F)

Open the Pressure Converter to convert any value between all units.

Sources

Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "inch of water (60 °F)".

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.

Cite this page

APA

Scientific Converters. (2026, October 15). Inch of Water (60 °F) (inH₂O (60 °F)). Retrieved October 17, 2026, from https://scientificconverters.com/units/inch-of-water-60f/

IEEE

Scientific Converters, "Inch of Water (60 °F) (inH₂O (60 °F))," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/units/inch-of-water-60f/