Millimeters of mercury (mmHg) to Bar (bar) Conversion
Millimeters of mercury
The millimetre of mercury (mmHg) is a unit of pressure equal to the pressure exerted by a 1 mm column of mercury at 0 °C and standard gravity — approximately 133.322 Pa. It is the universal clinical standard for measuring blood pressure: normal adult blood pressure is approximately 120/80 mmHg (systolic/diastolic). The mmHg is also used in ophthalmology (intraocular pressure, normal ≈ 10–21 mmHg) and respiratory physiology.
Bar
The bar is a unit of pressure equal to exactly 100,000 pascals (100 kPa), accepted for use with the SI by the BIPM. It is close to one standard atmosphere (1 atm = 1.01325 bar) making it convenient for many practical applications. The bar is widely used in meteorology (weather maps), industrial gas and fluid systems, and tyre inflation in continental Europe. A typical car tyre is inflated to 2.2–2.5 bar; scuba diving tanks are filled to 200–300 bar.
| Millimeters of mercury (mmHg) | Bar (bar) |
|---|---|
| 0.1 mmHg | 0.000133 bar |
| 1 mmHg | 0.00133 bar |
| 2 mmHg | 0.00267 bar |
| 3 mmHg | 0.004 bar |
| 5 mmHg | 0.00667 bar |
| 10 mmHg | 0.0133 bar |
| 20 mmHg | 0.0267 bar |
| 30 mmHg | 0.04 bar |
| 50 mmHg | 0.0667 bar |
| 100 mmHg | 0.1333 bar |
| 1000 mmHg | 1.3332 bar |
Frequently Asked Questions (FAQ)
How many bar are in 1 millimeters of mercury?
1 millimeters of mercury (mmHg) is exactly 0.001333 bar (bar).
How do I convert millimeters of mercury to bar?
Multiply the value in millimeters of mercury by 0.001333 to get the result in bar. Or use the converter above — type any number and see the result instantly.