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Pressure

mmHgtobar

Convert millimetres of mercury (mmHg) to bar (bar).

Factor1 mmHg = 0.001333224 bar

Converter

mmHg

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

Result
1.01325bar

Rendered to 6 significant figures.

Formula

Formula
bar = mmHg × 0.001333224

Multiply any value in millimetres of mercury by 0.001333224 to obtain the value in bar.

Worked example

Convert 760 mmHg to bar.

  1. 01Start with 760 mmHg.
  2. 02Multiply by the conversion factor: 760 × 0.001333224 = 1.01325 bar.
Result760 mmHg = 1.01325 bar

Conversion table

mmHgbar
10.0013332
20.0026664
50.0066661
100.013332
200.026664
500.066661
1000.13332
2000.26664
5000.66661
10001.3332

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from mmHg to bar?
1 mmHg equals 0.001333224 bar. To convert, multiply the value in millimetres of mercury by 0.001333224.
How do I convert 1 mmHg to bar?
1 mmHg = 0.00133322 bar. For any value, multiply by 0.001333224.
How do I convert bar back to mmHg?
Divide by the same factor — or equivalently, multiply by 750.0616. So 1 bar = 750.062 mmHg.
When would I need to convert millimetre of mercury to bar?
Pressure conversions between mmHg and bar 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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