Convert pascal to atmosphere
1 Pa = 0.000009869232667 atm
sig figs
1 Pa = 0.00000987 atm
1 Pa in every pressure unit
| microbar | 10 μbar |
| barye | 10 Ba |
| millitorr | 7.5 mTorr |
| pascal | 1 Pa |
| millimeter of water column | 0.102 mmH₂O |
| pound per square foot | 0.0209 lb/ft² |
| centimeter of water column | 0.0102 cmH₂O |
| hectopascal | 0.01 hPa |
| millibar | 0.01 mbar |
| torr | 0.0075 Torr |
| millimeter of mercury | 0.0075 mmHg |
| inch of water column | 0.00401 in w.g. |
| kilopascal | 0.001 kPa |
| foot of water column | 0.000335 ft H₂O |
| inch of mercury | 0.000295 inHg |
| pound per square inch | 0.000145 psi |
| meter of water column | 0.000102 m H₂O |
| decibar | 0.0001 dbar |
| kilogram-force per square centimeter | 0.0000102 kgf/cm² |
| bar | 0.00001 bar |
| atmosphere | 0.00000987 atm |
| megapascal | 0.000001 MPa |
| kip per square inch | 1.45e-07 ksi |
| gigapascal | 1.00e-09 GPa |
| million pounds per square inch | 1.45e-10 Mpsi |
How the conversion works
Multiply by 0.000009869232667 to go from pascal to atmosphere, or divide by it to go back. Every conversion on this site routes through the SI value (Pa) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? atmosphere to pascal: 1 atm = 101,325 Pa.
pascal to atmosphere: common values
| 1 Pa | 0.0000098692327 atm |
| 2 Pa | 0.000019738465 atm |
| 3 Pa | 0.000029607698 atm |
| 5 Pa | 0.000049346163 atm |
| 10 Pa | 0.000098692327 atm |
| 15 Pa | 0.00014803849 atm |
| 20 Pa | 0.00019738465 atm |
| 25 Pa | 0.00024673082 atm |
| 50 Pa | 0.00049346163 atm |
| 75 Pa | 0.00074019245 atm |
| 100 Pa | 0.00098692327 atm |
| 250 Pa | 0.0024673082 atm |
| 500 Pa | 0.0049346163 atm |
| 1000 Pa | 0.0098692327 atm |