How many pascals are in one mmHg?

One millimeter of mercury (1 mmHg) equals approximately 133.322387415 pascals (Pa). This value is defined by ISO 80000-4 based on the density of mercury (13,595.1 kg/m³) and standard gravity (9.80665 m/s²).

How do I convert mmHg to pascals manually?

Multiply the mmHg value by 133.322387415. For example, 120 mmHg × 133.322387415 ≈ 15,998.7 Pa.

Is mmHg the same as torr?

They are nearly identical but not exactly equal. 1 torr is defined as exactly 1/760 of a standard atmosphere (101,325 Pa), which equals 133.322368... Pa. One mmHg is based on the physical properties of mercury and equals 133.322387415 Pa. The difference is about 0.000014%, negligible for most practical purposes.

What is normal blood pressure in pascals?

A typical healthy blood pressure of 120/80 mmHg corresponds to approximately 15,998.7 Pa systolic and 10,665.8 Pa diastolic. Clinical practice uses mmHg; Pa appears in biomedical engineering and research.

What is 1 mmHg in kilopascals?

1 mmHg equals approximately 0.133322 kPa (kilopascals), since 1 kPa = 1,000 Pa and 1 mmHg ≈ 133.322 Pa.

What is standard atmospheric pressure in mmHg?

Standard atmospheric pressure (101,325 Pa) equals 760 mmHg exactly by definition of the standard atmosphere. This is why 760 mmHg appears as a reference point in chemistry and physics.

mmHg to Pascals Converter

Name: mmHg to Pascals Converter
Availability: InStock
Author: Nham Vu

Enter a pressure in mmHg and get the pascal equivalent instantly — includes reverse conversion and a reference table.

Converter

Pressure in mmHg

Pascals (Pa)

Kilopascals (kPa) —

Bar —

PSI —

Reverse: pascals to mmHg

Pressure in Pa

Result in mmHg

Reference Table

mmHg Pascals (Pa)

1 mmHg 133.322 Pa

10 mmHg 1,333.22 Pa

80 mmHg 10,665.8 Pa

120 mmHg 15,998.7 Pa

150 mmHg 19,998.4 Pa

200 mmHg 26,664.5 Pa

400 mmHg 53,329.0 Pa

760 mmHg 101,325 Pa (1 atm)

1,000 mmHg 133,322 Pa (133.322 kPa)

7,500 mmHg 999,992 Pa (~1 MPa)

Summary

Enter a pressure in mmHg and get the pascal equivalent instantly — includes reverse conversion and a reference table.

How it works

Enter the pressure value in mmHg in the top input field.
The converter multiplies your value by 133.322387415 to get pascals.
Results update instantly as you type — no button needed.
Kilopascal, bar, and psi equivalents appear below the Pa result.
Use the reverse field to convert pascals back to mmHg.
Click "Copy" next to any result to copy it to the clipboard.

Use cases

Convert blood pressure readings from mmHg to Pa for biomedical research.
Translate barometric pressure data from mmHg to SI units for meteorology reports.
Express vacuum gauge pressures in pascals for laboratory specifications.
Convert manometer readings in mmHg to Pa for fluid dynamics calculations.
Cross-check industrial pressure specs that mix mmHg and Pa units.
Verify medical device pressure ratings in SI pascal units.
Convert partial-pressure values in mmHg to Pa for gas mixture calculations.

Frequently Asked Questions

Last updated: 2026-07-23 · Reviewed by Nham Vu