Standard atmosphere (atm)
Exactly 101,325 pascals, defined as standard sea-level pressure.
Result
1 standard atmosphere = 101.325 kilopascals
Standard atmosphere at a glance
| Unit name | Standard atmosphere (plural: standard atmospheres) |
|---|---|
| Symbol | atm |
| Quantity measured | Pressure |
| Measurement system | Metric |
| Also known as | atm, atmospheres |
| Definition exact? | Yes — exact by definition |
1 standard atmosphere in other pressure units
| Unit | 1 atm equals |
|---|---|
| Pascal | 101,325 Pa |
| Hectopascal | 1,013.25 hPa |
| Kilopascal | 101.325 kPa |
| Megapascal | 0.101325 MPa |
| Bar | 1.01325 bar |
| Millibar | 1,013.25 mbar |
| Pound per square inch | 14.6959488 psi |
| Torr | 760 Torr |
| Millimeter of mercury | 759.999892 mmHg |
| Inch of mercury | 29.9212524 inHg |
| Dyne per square centimeter | 1,013,250 dyn/cm² |
Frequently asked questions
- What is a standard atmosphere?
- Exactly 101,325 pascals, defined as standard sea-level pressure.
- What is the symbol for the standard atmosphere?
- The symbol for the standard atmosphere is atm. It measures pressure.
- How many kilopascals are in a standard atmosphere?
- 1 standard atmosphere = 101.325 kilopascals.
- How many bars are in a standard atmosphere?
- 1 standard atmosphere = 1.01325 bars.
- How many pounds per square inch are in a standard atmosphere?
- 1 standard atmosphere = 14.6959488 pounds per square inch.