mmHg to psi

Convert mmHg to psi instantly — with a table, common pressure values, and a live calculator.

1 mmHg equals 0.0193 psi.

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Result (psi)0.0193 psi

mmHg to psi table

mmHgpsi
1 mmHg0.0193 psi
2 mmHg0.0387 psi
3 mmHg0.058 psi
5 mmHg0.0967 psi
10 mmHg0.193 psi
15 mmHg0.29 psi
20 mmHg0.387 psi
25 mmHg0.483 psi
30 mmHg0.58 psi
40 mmHg0.773 psi
50 mmHg0.967 psi
60 mmHg1.16 psi
75 mmHg1.45 psi
90 mmHg1.74 psi
100 mmHg1.93 psi
120 mmHg2.32 psi
150 mmHg2.9 psi
200 mmHg3.87 psi
250 mmHg4.83 psi
300 mmHg5.8 psi
400 mmHg7.73 psi
500 mmHg9.67 psi

psi to mmHg (reverse)

psimmHg
1 psi51.71 mmHg
2 psi103.43 mmHg
3 psi155.14 mmHg
5 psi258.57 mmHg
10 psi517.15 mmHg
15 psi775.72 mmHg
20 psi1034.3 mmHg
25 psi1292.87 mmHg
30 psi1551.45 mmHg
40 psi2068.6 mmHg
50 psi2585.75 mmHg
60 psi3102.9 mmHg
75 psi3878.62 mmHg
90 psi4654.34 mmHg
100 psi5171.49 mmHg
120 psi6205.79 mmHg
150 psi7757.24 mmHg
200 psi10342.99 mmHg
250 psi12928.73 mmHg
300 psi15514.48 mmHg
400 psi20685.97 mmHg
500 psi25857.46 mmHg

Common pressure values

mmHgpsi
5 mmHg0.0967 psi
10 mmHg0.193 psi
25 mmHg0.483 psi
50 mmHg0.967 psi
75 mmHg1.45 psi
100 mmHg1.93 psi
120 mmHg2.32 psi
150 mmHg2.9 psi
200 mmHg3.87 psi
300 mmHg5.8 psi
400 mmHg7.73 psi
500 mmHg9.67 psi

How it scales

0.511.51.90255075100mmHg

1 bar in other units

14.5psi100kPa1atm750mmHg

The ratio at a glance

1 mmHg0.02 psi

psi, bar, and pascal — the key pressure units

The pascal (Pa) is the SI unit of pressure; the kilopascal (kPa) and megapascal (MPa) are its multiples. The bar equals exactly 100,000 Pa and is close to air pressure — but beware: 1 bar is not equal to 1 atmosphere (atm), because 1 atm is 101,325 Pa (about 1.3% more). psi (pound-force per square inch) is the US unit for tire and pneumatic pressures, and mmHg (torr) is used for blood pressure and vacuum work.

Watch out for gauge vs. absolute pressure: psi values are usually gauge (psig) — that is, above ambient. Tire pressures are quoted this way. For more unit pairs, use our pressure conversion hub.

Related conversions

Frequently asked questions

How many psi are in 1 mmHg?

1 mmHg equals 0.0193 psi.

How many psi are in 2 mmHg?

2 mmHg equal 0.0387 psi.

How do I convert mmHg to psi?

Divide the pressure in mmHg by 51.71 to get psi.

Is psi gauge or absolute pressure?

In practice, psi is usually gauge pressure (psig) — the pressure above ambient air. Tire and pneumatic pressures are quoted this way. Absolute pressure (psia) is measured from a vacuum and is about 14.7 psi (1 atm) higher.

What are these pressure units used for?

Pascals (Pa), kilopascals (kPa), and megapascals (MPa) are the SI units of pressure. The bar and millibar (mbar) are used in meteorology and engineering, psi mainly for tires and pneumatics (US), the atmosphere (atm) as a reference pressure, and mmHg (torr) for blood pressure and vacuum work.

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