Atmosphere (atm)

One standard atmosphere (atm) equals 101,325 Pascals, 1.01325 bar, or 14.696 PSI—the average air pressure at sea level. Atmospheres measure diving depth (every 10 meters adds ~1 atm), altitude effects, and chemical reactions. Used as a reference pressure in science.

Convert From Atmospheres

Atmosphere to Pascal Atmosphere to Hectopascal atm to kPa Atmosphere to Megapascal atm to bar Atmosphere to Millibar atm to psi Atmosphere to Pound per Square Foot atm to mmHg Atmosphere to Torr Atmosphere to Inch of Mercury Atmosphere to Centimeter of Water

Convert To Atmospheres

Pascal to Atmosphere Hectopascal to Atmosphere kPa to atm Megapascal to Atmosphere bar to atm Millibar to Atmosphere psi to atm Pound per Square Foot to Atmosphere mmHg to atm Torr to Atmosphere Inch of Mercury to Atmosphere Centimeter of Water to Atmosphere

Conversion Factors

1 atm 101325 Pa

1 atm 1013.25 hPa

1 atm 101.325 kPa

1 atm 0.101325 MPa

1 atm 1.01325 bar

1 atm 1013.25 mbar

1 atm 14.695948776 psi

1 atm 2116.2166237 psf

1 atm 759.99989173 mmHg

1 atm 760 Torr

1 atm 29.921252402 inHg

1 atm 1033.2274528 cmH₂O

Related Units

Pascal (Pa) Hectopascal (hPa) Kilopascal (kPa) Megapascal (MPa) Bar (bar) Millibar (mbar) Pound per Square Inch (psi) Pound per Square Foot (psf) Millimeter of Mercury (mmHg) Torr (Torr) Inch of Mercury (inHg) Centimeter of Water (cmH₂O)