MPa to atm Converter

How to convert megapascals to atmospheres

Formulaatm = MPa × 9.869232667

Because one standard atmosphere equals 0.101325 megapascals, you can also divide: atm = MPa ÷ 0.101325.

A megapascal is larger than a standard atmosphere: one megapascal contains 9.869232667 atmospheres.

Worked examples

1 megapascal1 MPa × 9.869232667 = 9.869232667 atm
5 megapascals5 MPa × 9.869232667 = 49.34616334 atm
10 megapascals10 MPa × 9.869232667 = 98.69232667 atm
20 megapascals20 MPa × 9.869232667 = 197.3846533 atm
100 megapascals100 MPa × 9.869232667 = 986.9232667 atm

Megapascals to atmospheres conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Megapascals to atmospheres: 0.1–10 MPa
Megapascals (MPa)	Atmospheres (atm)
0.1 MPa	0.98692327 atm
0.25 MPa	2.4673082 atm
0.5 MPa	4.9346163 atm
1 MPa	9.8692327 atm
2 MPa	19.738465 atm
3 MPa	29.607698 atm
4 MPa	39.476931 atm
5 MPa	49.346163 atm
6 MPa	59.215396 atm
7 MPa	69.084629 atm
8 MPa	78.953861 atm
9 MPa	88.823094 atm
10 MPa	98.692327 atm

Megapascals to atmospheres: 12–1,000 MPa
Megapascals (MPa)	Atmospheres (atm)
12 MPa	118.43079 atm
15 MPa	148.03849 atm
20 MPa	197.38465 atm
25 MPa	246.73082 atm
30 MPa	296.07698 atm
40 MPa	394.76931 atm
50 MPa	493.46163 atm
75 MPa	740.19245 atm
100 MPa	986.92327 atm
250 MPa	2,467.3082 atm
500 MPa	4,934.6163 atm
1,000 MPa	9,869.2327 atm

About the units

Megapascal (MPa)

One million pascals, equal to 1 N/mm². Concrete and steel strengths are given in MPa. One megapascal equals 1,000,000 pascals (Pa).

Standard atmosphere (atm)

Exactly 101,325 Pa — average sea-level air pressure.

Frequently asked questions

How many atmospheres are in one megapascal?

There are 9.869232667 atmospheres in one megapascal, and this value is exact by definition.

How do I convert megapascals to atmospheres?

Multiply the number of megapascals by 9.869232667. For example, 10 MPa × 9.869232667 = 98.69232667 atm.

How many megapascals are in one standard atmosphere?

One standard atmosphere equals 0.101325 megapascals. That is the reverse factor, 1 ÷ 9.869232667.

What is 10 megapascals in atmospheres?

10 MPa = 98.69232667 atm.

Is this MPa to atm converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.