Convert atmosphere to pascal
1 atm = 101,325 Pa
sig figs
1 atm = 101,000 Pa
1 atm in every pressure unit
| microbar | 1,010,000 μbar |
| barye | 1,010,000 Ba |
| millitorr | 760,000 mTorr |
| pascal | 101,000 Pa |
| millimeter of water column | 10,300 mmH₂O |
| pound per square foot | 2,120 lb/ft² |
| centimeter of water column | 1,030 cmH₂O |
| hectopascal | 1,010 hPa |
| millibar | 1,010 mbar |
| torr | 760 Torr |
| millimeter of mercury | 760 mmHg |
| inch of water column | 407 in w.g. |
| kilopascal | 101 kPa |
| foot of water column | 33.9 ft H₂O |
| inch of mercury | 29.9 inHg |
| pound per square inch | 14.7 psi |
| meter of water column | 10.3 m H₂O |
| decibar | 10.1 dbar |
| kilogram-force per square centimeter | 1.03 kgf/cm² |
| bar | 1.01 bar |
| atmosphere | 1 atm |
| megapascal | 0.101 MPa |
| kip per square inch | 0.0147 ksi |
| gigapascal | 0.000101 GPa |
| million pounds per square inch | 0.0000147 Mpsi |
How the conversion works
Multiply by 101,325 to go from atmosphere to pascal, 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? pascal to atmosphere: 1 Pa = 0.000009869232667 atm.
atmosphere to pascal: common values
| 1 atm | 101,325 Pa |
| 2 atm | 202,650 Pa |
| 3 atm | 303,975 Pa |
| 5 atm | 506,625 Pa |
| 10 atm | 1,013,250 Pa |
| 15 atm | 1,519,875 Pa |
| 20 atm | 2,026,500 Pa |
| 25 atm | 2,533,125 Pa |
| 50 atm | 5,066,250 Pa |
| 75 atm | 7,599,375 Pa |
| 100 atm | 10,132,500 Pa |
| 250 atm | 25,331,250 Pa |
| 500 atm | 50,662,500 Pa |
| 1000 atm | 101,325,000 Pa |