Pressure
MPatoatm
Convert megapascals (MPa) to standard atmospheres (atm).
Factor1 MPa = 9.869233 atm
Converter
MPa
Accepts numbers or expressions, e.g. 150 + 14.7
Result
atm
Rendered to 6 significant figures.
Formula
Formula
atm = MPa × 9.869233
Multiply any value in megapascals by 9.869233 to obtain the value in standard atmospheres.
Worked example
Convert 1 MPa to atm.
- 01Start with 1 MPa.
- 02Multiply by the conversion factor: 1 × 9.869233 = 9.86923 atm.
Result1 MPa = 9.86923 atm
Conversion table
| MPa | atm |
|---|---|
| 1 | 9.8692 |
| 2 | 19.738 |
| 5 | 49.346 |
| 10 | 98.692 |
| 20 | 197.38 |
| 50 | 493.46 |
| 100 | 986.92 |
| 200 | 1973.8 |
| 500 | 4934.6 |
| 1000 | 9869.2 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from MPa to atm?
1 MPa equals 9.869233 atm. To convert, multiply the value in megapascals by 9.869233.
How do I convert 1 MPa to atm?
1 MPa = 9.86923 atm. For any value, multiply by 9.869233.
How do I convert atm back to MPa?
Divide by the same factor — or equivalently, multiply by 0.101325. So 1 atm = 0.101325 MPa.
When would I need to convert megapascal to standard atmosphere?
Pressure conversions between MPa and atm are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
Yes. Both MPa and atm are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).