Pressure units

• Standard Atmospheric Pressure is 1 atmosphere (latm).
• 1 atm = 1013 hPa = 1013 millibar (1013 mb).
• 1 hPa = 100 Pa = 1 mb.
• 1 atm = 1.013 × 10⁵ Pa = 760 millimetre mercury (760 mm Hg).
• lpsi = 6.90×10³ Pa.
• IPa = 1.45 × 10^-4 lb in^-2 (psi).