Convert Atmospheres to Pascals

The atm-to-Pa conversion appears often when working with pressure data across different unit systems. Pressure conversions appear in tire inflation, weather forecasting, scuba diving, and industrial engineering across pascals, bar, psi, and mmHg.

To convert, multiply the atmospheres value by 1.0133e+5. Written as an equation: Pa = atm × 1.0133e+5.

One atmospheres equals approximately 101325 Pa. This means you can multiply any atm value by 101325 to get the equivalent in Pa.

Worked example: 100 atm = 10132500 Pa. Enter your own value in the converter above for instant results.

Common mistake: Tire pressure may be listed in psi, bar, or kPa depending on your gauge or vehicle manual — always match the unit your manufacturer specifies.

Bookmark this page for quick atm to Pa conversions, or use the swap button to reverse the direction and convert Pa back to atm.