Online calculator to convert millimeters of mercury to pounds per square inch (mmHg to psi) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Pressure units.
Conversion Calculator
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Convert mmHg to Psi
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between mmHg and psi.
What is millimeters of mercury (mmHg)?
Millimeters of mercury is a non-SI unit of Pressure. The symbol for millimeters of mercury is mmHg. There are 51.71493256 mmHg in a psi.
What is pounds per square inch (psi)?
Pounds per square inch (or pound-force per square inch) is a non-SI unit of Pressure. The symbol for pounds per square inch is psi or lbf/in2. There are 0.0193368 psi in a mmHg.
Conversion Formula
Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from mmHg to psi is:
psi = mmHg ÷ 51.71493256
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from millimeters of mercury to pounds per square inch (mmHg to psi).
mmHg to Psi Conversion Example
Task: Convert 975 mmHg to psi (show work) Formula: mmHg ÷ 51.71493256 = psi Calculations: 975 mmHg ÷ 51.71493256 = 18.8533553 psi Result: 975 mmHg is equal to 18.8533553 psi
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from mmHg to psi.
mmHg to Psi Conversion Chart
| millimeters of mercury (mmHg) | pounds per square inch (psi) |
|---|---|
| 1 mmHg | 0.0193368 psi |
| 2 mmHg | 0.0386735 psi |
| 3 mmHg | 0.0580103 psi |
| 4 mmHg | 0.0773471 psi |
| 5 mmHg | 0.0966839 psi |
| 6 mmHg | 0.1160206 psi |
| 7 mmHg | 0.1353574 psi |
| 8 mmHg | 0.1546942 psi |
| 9 mmHg | 0.174031 psi |
| 10 mmHg | 0.1933677 psi |
| 20 mmHg | 0.3867355 psi |
| 30 mmHg | 0.5801032 psi |
| 40 mmHg | 0.773471 psi |
| 50 mmHg | 0.9668387 psi |
| 75 mmHg | 1.4502581 psi |
| 100 mmHg | 1.9336775 psi |
| 250 mmHg | 4.8341937 psi |
| 500 mmHg | 9.6683874 psi |
| 750 mmHg | 14.502581 psi |
| 1,000 mmHg | 19.3367747 psi |
| 2,500 mmHg | 48.3419368 psi |
| 5,000 mmHg | 96.6838735 psi |
| 7,500 mmHg | 145.0258103 psi |
| 10,000 mmHg | 193.3677471 psi |
| 25,000 mmHg | 483.4193677 psi |
| 50,000 mmHg | 966.8387354 psi |
| 75,000 mmHg | 1,450.2581032 psi |
| 100,000 mmHg | 1,933.6774709 psi |
| 250,000 mmHg | 4,834.1936772 psi |
Related Units
This table provides a summary of the Pressure units within their respective measurement systems.
| Unit | Symbol | Measurement System |
|---|---|---|
| pascal | Pa | International System of Units (SI) |
| kilopascal | kPa | International System of Units (SI) |
| megapascal | MPa | International System of Units (SI) |
| atmosphere | atm | Non-SI (International) |
| pounds per square inch | psi or lbf/in2 | Non-SI (International) |
| millimeters of mercury | mmHg | Non-SI (International) |
| bar | bar | Non-SI (International) |
| torr | Torr | Non-SI (International) |
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