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Pressure

mmHgtoMPa

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

Factor1 mmHg = 0.0001333224 MPa

Converter

mmHg

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

Result
0.999918MPa

Rendered to 6 significant figures.

Formula

Formula
MPa = mmHg × 0.0001333224

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

Worked example

Convert 7500 mmHg to MPa.

  1. 01Start with 7500 mmHg.
  2. 02Multiply by the conversion factor: 7500 × 0.0001333224 = 0.999918 MPa.
Result7500 mmHg = 0.999918 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 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 to megapascal?
Pressure conversions between mmHg 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?
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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