Table Of Contents
Atmospheres to megapascal Conversion
1 atmospheres (atm) is equal to 0.101325 megapascal (MPa).
1 atm = 0.101325 MPa
or
1 MPa = 9.869232667 atm
Formula
To convert a pressure from atmospheres (atm) to megapascal (MPa), divide the pressure in atmospheres by 9.869232667
p(MPa) = p(atm) / 9.869232667
Examples:
Convert 2 atmospheres to megapascal:
p(MPa) = 2atm / 9.869232667 = 0.20265 MPa
Conversion table
| Atmospheres (atm) | Megapascal (MPa) |
|---|---|
| 1 atm | 0.101325 MPa |
| 2 atm | 0.20265 MPa |
| 3 atm | 0.303975 MPa |
| 5 atm | 0.506625 MPa |
| 10 atm | 1.01325 MPa |
| 20 atm | 2.0265 MPa |
| 25 atm | 2.533125 MPa |
| 50 atm | 5.06625 MPa |
| 100 atm | 10.1325 MPa |
| 250 atm | 25.33125 MPa |
| 500 atm | 50.6625 MPa |
| 1000 atm | 101.325 MPa |
| Megapascal (MPa) | Atmospheres (atm) |
|---|---|
| 1 MPa | 9.869232667 atm |
| 2 MPa | 19.738465334 atm |
| 3 MPa | 29.607698001 atm |
| 5 MPa | 49.346163336 atm |
| 10 MPa | 98.692326672 atm |
| 20 MPa | 197.384653343 atm |
| 25 MPa | 246.730816679 atm |
| 50 MPa | 493.461633358 atm |
| 100 MPa | 986.923266716 atm |
| 250 MPa | 2467.30816679 atm |
| 500 MPa | 4934.61633358 atm |
| 1000 MPa | 9869.23266716 atm |
Frequently asked questions
How do I convert atmospheres to megapascal?
Divide the value in atmospheres by 9.869232667 to get the result in megapascal. For example, 5 atm ÷ 9.869232667 = 0.506625 MPa.
How many megapascal are in 1 atmospheres?
1 atmospheres (atm) is equal to 0.101325 megapascal (MPa).
How do I convert megapascal back to atmospheres?
Use the inverse operation: multiply the value in megapascal by 9.869232667 to get the result in atmospheres.
How accurate is the atmospheres to megapascal conversion?
The converter multiplies by the conversion factor 9.869232667 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- ISO 80000-4:2019 — Quantities and units — Part 4: Mechanics
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- Resolution 4 of the 10th CGPM (1954): Definition of the standard atmosphere