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Pressure

atmtoMPa

Convert standard atmospheres (atm) to megapascals (MPa).

Factor1 atm = 0.101325 MPa

Converter

atm

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1.01325MPa

Rendered to 6 significant figures.

Formula

Formula
MPa = atm × 0.101325

Multiply any value in standard atmospheres by 0.101325 to obtain the value in megapascals.

Worked example

Convert 10 atm to MPa.

  1. 01Start with 10 atm.
  2. 02Multiply by the conversion factor: 10 × 0.101325 = 1.01325 MPa.
Result10 atm = 1.01325 MPa

Conversion table

atmMPa
10.10132
20.20265
50.50662
101.0132
202.0265
505.0663
10010.133
20020.265
50050.663
1000101.33

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from atm to MPa?
1 atm equals 0.101325 MPa. To convert, multiply the value in standard atmospheres by 0.101325.
How do I convert 1 atm to MPa?
1 atm = 0.101325 MPa. For any value, multiply by 0.101325.
How do I convert MPa back to atm?
Divide by the same factor — or equivalently, multiply by 9.869233. So 1 MPa = 9.86923 atm.
When would I need to convert standard atmosphere to megapascal?
Pressure conversions between atm and MPa 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 atm and MPa are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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