MmHg to Psi

Convert mmHg (mmHg) to psi (psi). Type a value below to see the result update instantly. Reference table and formula included.

Calculator

MmHg

mmHg

⇌

Psi

psi

1 mmHg = 0.019337 psi

MmHg to Psi Conversion Table

Common values, ready to copy:

mmHg	psi
1 mmHg	0.019337 psi
2 mmHg	0.038673 psi
5 mmHg	0.096684 psi
10 mmHg	0.193367 psi
25 mmHg	0.483418 psi
50 mmHg	0.966836 psi
100 mmHg	1.9337 psi
1,000 mmHg	19.3367 psi

Formula

psi = mmHg × 1.93367137e-2

Pressure is force per area. 1 atm = 101.325 kPa = 14.696 psi = 760 mmHg. Bar is a metric working unit close to atmospheric pressure (1 bar = 100 kPa).

About MmHg and Psi

MmHg (mmHg): Millimeters of mercury; the pressure exerted by a column of mercury that height; a torr is essentially identical (1 mmHg ≈ 1 torr to within 1 part in 7 million). Common uses: Blood pressure (systolic over diastolic, in mmHg), vacuum systems, barometric pressure in some medical and scientific contexts.

Psi (psi): Pounds-force per square inch, the customary US pressure unit; 1 psi = 6,894.76 Pa. Common uses: US tire pressure (car tires typically 30-35 psi), US gas grills (10-12 psi propane), industrial hydraulics in the US, and US plumbing pressure specifications.

How the conversion works

Pressure is force per area. 1 atm = 101.325 kPa = 14.696 psi = 760 mmHg. Bar is a metric working unit close to atmospheric pressure (1 bar = 100 kPa).

The exact relationship is psi = mmHg × 1.93367137e-2, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.

When this conversion matters

Converting between mmHg and psi comes up wherever pressure measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.