How many mmHg is 1 psi?

1 psi equals 51.71493 mmHg. For quick mental math, multiply any psi value by about 51.7 to get mmHg.

How do I convert psi to mmHg manually?

Multiply the psi value by 51.71493. For example, 2 psi × 51.71493 = 103.43 mmHg.

What is normal blood pressure in psi?

A typical blood pressure of 120/80 mmHg equals approximately 2.32/1.55 psi. Medical instruments always display mmHg because it is the clinical standard.

What is standard atmospheric pressure in mmHg?

Standard atmospheric pressure is 14.696 psi, which equals 760 mmHg (or 760 Torr). This is the baseline used in many medical and scientific calculations.

Is mmHg the same as Torr?

For most practical purposes, mmHg and Torr are identical. 1 Torr = 1 mmHg by definition. The Torr name comes from Evangelista Torricelli who invented the mercury barometer.

What is 30 psi in mmHg?

30 psi equals approximately 1,551.4 mmHg. This is well above blood pressure range — it is typical of industrial or tire pressure values.

PSI to mmHg Converter

Enter a pressure in PSI and get the mmHg equivalent instantly — reverse mmHg-to-PSI conversion included.

Converter

Pressure in PSI

Result in mmHg

Reverse: mmHg to PSI

Pressure in mmHg

Result in PSI

Reference Table

PSI mmHg

0.019337 psi 1

1 psi 51.715

2.32 psi 120 (systolic ref)

5 psi 258.57

10 psi 517.15

14.696 psi (1 atm) 760

15 psi 775.72

20 psi 1,034.3

30 psi 1,551.4

40 psi 2,068.6

60 psi 3,102.9

100 psi 5,171.5

Summary

This converter turns any PSI value into mmHg (millimeters of mercury) in real time using the exact factor of 1 psi = 51.71493 mmHg. mmHg (also called Torr) is the standard unit for blood pressure readings and barometric pressure in meteorology. All math runs in your browser — no server call is made. A reverse field converts mmHg back to PSI, and a reference table covers common medical and industrial pressure values.

How it works

Enter the pressure value in PSI in the top input field.
The mmHg result appears instantly as you type.
Use the reverse field to convert mmHg back to PSI.
Click "Copy" next to any result to copy it to your clipboard.
Check the reference table for common PSI-to-mmHg values.

Use cases

Convert industrial pressure specs from psi to mmHg for medical device applications.
Translate barometric pressure readings between psi and mmHg for weather instruments.
Convert blood pressure monitor calibration values from psi to mmHg.
Check vacuum pump specs listed in psi against mmHg requirements.
Convert gas regulator output pressures from psi to mmHg for lab equipment.
Verify hydraulic pressure values in psi for medical or scientific instruments.

Frequently Asked Questions

Last updated: 2026-06-18 · Reviewed by Nham Vu