standard atmosphere
| Symbol: | atm |
| Category: | Pressure |
| SI Equivalent: | 1.01325×105 Pa |
| Dimension: | ML-1T-2 |
| System: | INT |
| Notes | |
| Unit of pressure equal that represents the air pressure at mean sea level. This unit is now defined as 101325 Pa. | |
52 conversions, showing those commonly used | Show all
1 atm =
| Pressure | ||
| Symbol | Unit Name | |
| 1 | atm | atmosphere (standard) |
| 1.01325 | bar | bar |
| 76 | cmHg (0 °C) | centimeter of mercury (0°C) |
| 1033.26 | cmH2O | centimeter of water (4°C) |
| 1.01325×106 | dyn/cm2 | dyne per square centimeter |
| 33.8995 | ft H2O | foot of water (4°C) |
| 1.01325×10-4 | GPa | gigapascal |
| 29.9213 | inHg (0 °C) | inch of mercury (0°C) |
| 407.181 | inH2O (15.56 °C) | inch of water (15.56°C) |
| 1.03323 | kgf/cm2 | kilogram force per square centimeter |
| 1.03323×104 | kgf/m2 | kilogram force per square meter |
| 1.46959×10-2 | kip/in2, ksi, KSI | kilopound force per square inch |
| 0.101325 | MPa | megapascal |
| 1013.25 | mbar | millibar |
| 1.01325×105 | Pa, N/m2 | pascal |
| 2116.22 | lbf/ft2 | pound force per square foot |
| 14.6959 | psi, PSI, lbf/in2 | pound force per square inch |
| 760 | torr | torr |
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