Mm Hg To Psi Conversion Calculator

mmHg to PSI Calculator

To convert Millimeters of Mercury (mmHg) to Pounds per Square Inch (PSI), enter pressure value in mmHg and click Calculate to see result in PSI.

The calculator also provides additional unit conversions including Atmospheres (atm), Kilopascals (kPa), and Bar.

mmHg to PSI Conversion Table

mmHg Converted toPounds per Square Inch (psi)
1 mmHg0.01934 psi
2 mmHg0.03868 psi
3 mmHg0.05801 psi
4 mmHg0.07735 psi
5 mmHg0.09668 psi
10 mmHg0.19337 psi
20 mmHg0.38673 psi
25 mmHg0.48434 psi
30 mmHg0.58010 psi
50 mmHg0.96684 psi
80 mmHg1.54694 psi
100 mmHg1.93368 psi
120 mmHg2.32128 psi
200 mmHg3.87298 psi
235 mmHg4.54436 psi
300 mmHg5.83103 psi
500 mmHg9.66843 psi
456 mmHg8.82247 psi
760 mmHg14.696 psi

How to Convert mmHg to PSI?

To convert mmHg to PSI, multiply the mmHg value by 0.0193368. This conversion factor is derived from the relationship between standard atmospheric pressure in both units, where 760 mmHg equals 14.696 PSI.

Example 4: Vacuum Reading

  • Input Value = 50 mmHg
  • Converted Value = 0.97 PSI
  • Additional Units = 0.066 atm
  • Application = Laboratory Equipment

Example 5: High Pressure System

  • Input Value = 1000 mmHg
  • Converted Value = 19.34 PSI
  • Additional Units = 1.316 atm
  • Application = Industrial Process

Formula for mmHg to PSI Conversion

Direct Conversion Formula:

PSI = mmHg × 0.0193368
where:
mmHg = Pressure in millimeters of mercury
0.0193368 = Conversion factor

Using Atmospheric Pressure:

PSI = mmHg × (14.696 ÷ 760)
where:
14.696 = Standard atmospheric pressure in PSI
760 = Standard atmospheric pressure in mmHg

Temperature Correction:

mmHg(corrected) = mmHg × (1 - 0.000182 × (T - 20))
where:
T = Temperature in Celsius
20 = Reference temperature

Example 1: Blood Pressure Reading

  • Input Value = 120 mmHg
  • Converted Value = 2.32 PSI
  • Additional Units = 0.158 atm
  • Application = Medical Measurement

Example 2: Standard Atmosphere

  • Input Value = 760 mmHg
  • Converted Value = 14.696 PSI
  • Additional Units = 1.000 atm
  • Application = Reference Value

Example 3: Low Pressure System

  • Input Value = 500 mmHg
  • Converted Value = 9.67 PSI
  • Additional Units = 0.658 atm
  • Application = Weather Systems

What is mmHg and PSI?

Millimeters of Mercury (mmHg) is a pressure unit representing the height of a mercury column in millimeters under standard gravity. It’s commonly used in Medical Settings for blood pressure measurements and in Meteorology for atmospheric pressure readings.

Pounds per Square Inch (PSI) is a unit measuring pressure as force per unit area in the imperial system. It’s widely used in Engineering, Industrial Applications, and Everyday Measurements like tire pressure.

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