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Stress

mmHgtoMPa

Convert millimetres of mercury (stress) (mmHg) to megapascals (stress) (MPa).

Factor1 mmHg = 0.0001333224 MPa

Converter

mmHg

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

Result
1.33322MPa

Rendered to 6 significant figures.

Formula

Formula
MPa = mmHg × 0.0001333224

Multiply any value in millimetres of mercury (stress) by 0.0001333224 to obtain the value in megapascals (stress).

Worked example

Convert 10000 mmHg to MPa.

  1. 01Start with 10000 mmHg.
  2. 02Multiply by the conversion factor: 10000 × 0.0001333224 = 1.33322 MPa.
Result10000 mmHg = 1.33322 MPa

Conversion table

mmHgMPa
10.00013332
20.00026664
50.00066661
100.0013332
200.0026664
500.0066661
1000.013332
2000.026664
5000.066661
10000.13332

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from mmHg to MPa?
1 mmHg equals 0.0001333224 MPa. To convert, multiply the value in millimetres of mercury (stress) by 0.0001333224.
How do I convert 1 mmHg to MPa?
1 mmHg = 0.000133322 MPa. For any value, multiply by 0.0001333224.
How do I convert MPa back to mmHg?
Divide by the same factor — or equivalently, multiply by 7500.616. So 1 MPa = 7500.62 mmHg.
When would I need to convert millimetre of mercury (stress) to megapascal (stress)?
Stress conversions between mmHg and MPa are routine in mechanics-of-materials work: yield, ultimate and allowable-stress specification, Young's-modulus tables and structural-design code calculations. MPa and N/mm² dominate ISO and European datasheets, psi and ksi dominate US structural codes, and kgf/cm² and kgf/mm² appear in legacy JIS and heavy-engineering documentation. Stress is the same physical dimension as pressure but a different engineering quantity — this category is mechanics-of-materials, not process pressure.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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