▸ processconvert
Pressure

mmHgtopsi

Convert millimetres of mercury (mmHg) to pounds-force per square inch (psi).

Factor1 mmHg = 0.01933678 psi

Converter

mmHg

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

Result
14.696psi

Rendered to 6 significant figures.

Formula

Formula
psi = mmHg × 0.01933678

Multiply any value in millimetres of mercury by 0.01933678 to obtain the value in pounds-force per square inch.

Worked example

Convert 760 mmHg to psi.

  1. 01Start with 760 mmHg.
  2. 02Multiply by the conversion factor: 760 × 0.01933678 = 14.696 psi.
Result760 mmHg = 14.696 psi

Conversion table

mmHgpsi
10.019337
20.038674
50.096684
100.19337
200.38674
500.96684
1001.9337
2003.8674
5009.6684
100019.337

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from mmHg to psi?
1 mmHg equals 0.01933678 psi. To convert, multiply the value in millimetres of mercury by 0.01933678.
How do I convert 1 mmHg to psi?
1 mmHg = 0.0193368 psi. For any value, multiply by 0.01933678.
How do I convert psi back to mmHg?
Divide by the same factor — or equivalently, multiply by 51.71493. So 1 psi = 51.7149 mmHg.
When would I need to convert millimetre of mercury to pound-force per square inch?
Pressure conversions between mmHg and psi 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).

Related conversions