Pressure conversion
1 megapascal (MPa) equals 9.86923266716 standard atmosphere (atm). Enter any value below to convert from MPa to atm.
Enter a value and choose units. Results update instantly.
1 MPa = 9.8692326672 atm
| Unit | Value |
|---|---|
| Pascal Pa | 1,000,000 |
| Kilopascal kPa | 1,000 |
| Megapascal MPa | 1 |
| Bar bar | 10 |
| Millibar mbar | 10,000 |
| Standard atmosphere atm | 9.8692326672 |
| Pound per square inch psi | 145.0377377302 |
| Torr Torr | 7,500.6168270417 |
| Millimeter of mercury mmHg | 7,500.6157584566 |
| Inch of mercury inHg | 295.2998016471 |
Formula
Use this relationship for a direct conversion:
2 MPa = 19.7384653343 atm.
Conventional mercury-column units are not measurements adjusted for local temperature or gravity.
Quick reference
| Megapascal (MPa) | Standard atmosphere (atm) |
|---|---|
| 0.01 | 0.0986923267 |
| 0.1 | 0.9869232667 |
| 1 | 9.8692326672 |
| 2 | 19.7384653343 |
| 5 | 49.3461633358 |
| 10 | 98.6923266716 |
| 25 | 246.730816679 |
| 50 | 493.461633358 |
| 100 | 986.923266716 |
| 1,000 | 9,869.2326671601 |
From unit
One million pascals.
Symbol: MPa
To unit
Exactly 101,325 pascals.
Symbol: atm
Keep converting
Source
Definitions are checked against NIST SP 811: Pressure units. Calculations use full internal precision before display rounding.
View the complete pressure converterQuestions
Use the formula atm = MPa x 9.86923266716. 1 megapascal (MPa) equals 9.86923266716 standard atmosphere (atm).
Both unit definitions use exact factors. Only the displayed decimal may be rounded.
