About RF Cafe Copyright: 1996 - 2024Webmaster:     BSEE - KB3UON RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived... All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged. My Hobby Website: AirplanesAndRockets.com

Pressure Conversions

Pressure is defined as force per unit area applied to an object in a direction perpendicular to the surface.

The table below presents conversion factors between common units of force.

Standard units = Pascal (P)

 atmosphere inch of water lb per sq in lb per sq ft cm of Hg dyn/cm2 pascal 1 atm = 1 406.8 14.70 2116 75.99 1.013 * 106 1.013 * 105 1 in water = 2.458 * 10-3 1 3.613 * 10-2 5.202 0.1868 2491 249.1 1 lb/in2 = 6.805 * 10-2 27.68 1 144 5.171 6.895 * 104 6.895 * 103 1 lb/ft2 = 4.725 * 10-4 0.1922 6.944 * 10-3 1 3.591x10-2 478.8 47.88 1 cm Hg = 1.316 * 10-2 5.353 0.1934 27.85 1 1.333 * 104 1333 1 dyn/cm2 = 9.869 * 10-7 4.015 * 10-4 1.450 * 10-5 2.089 * 10-3 7.501 * 10-5 1 0.1 1 Pa = 9.869 * 10-6 4.015 * 10-3 1.450 * 10-4 2.089 * 10-2 7.501 * 10-4 10 1

 in of water @ 4º C 1 bar = 106 dyn/cm2 cm of Hg @ 0º C 1 atm = 29.92 in of Hg