Millimeters of mercury Converter
Convert Millimeters of mercury (mmHg) to any other pressure unit. The table below gives the exact figure for each unit, and every conversion is worked from the same engine as the converter.
What millimeters of mercury convert to
One mmHg in every other pressure unit.
| Unit | 1 mmHg | Reverse |
|---|---|---|
| Pascals | 133.322387 Pa | 0.007501 mmHg |
| Kilopascals | 0.133322 kPa | 7.500616 mmHg |
| Megapascals | 1.3332e-4 MPa | 7,500.615758 mmHg |
| Bar | 0.001333 bar | 750.061576 mmHg |
| Millibar | 1.333224 mbar | 0.750062 mmHg |
| Atmospheres | 0.001316 atm | 759.999892 mmHg |
| Pounds per square inch | 0.019337 psi | 51.714925 mmHg |
| Inches of mercury | 0.03937 inHg | 25.400003 mmHg |
Multiply a millimeters of mercury figure by the figure in the second column to get the unit in the first, or multiply by the third column to go the other way.
Millimeters of mercury conversion reference
Millimeters of mercury to Pascals
One millimeters of mercury is 133.322387 pascals, and one pascals is 0.007501 millimeters of mercury.
The pascal is the SI unit of pressure: one newton per square meter. It is used in science and engineering, usually as kilopascals or megapascals.
- 1 mmHg= 133.322387 Pa
- 2 mmHg= 266.644775 Pa
- 5 mmHg= 666.611937 Pa
Millimeters of mercury to Kilopascals
One millimeters of mercury is 0.133322 kilopascals, and one kilopascals is 7.500616 millimeters of mercury.
A kilopascal is 1,000 pascals. It is the unit for tyre pressure in metric countries, and is used for gas and weather pressures.
- 1 mmHg= 0.133322 kPa
- 2 mmHg= 0.266645 kPa
- 5 mmHg= 0.666612 kPa
Millimeters of mercury to Megapascals
One millimeters of mercury is 1.3332e-4 megapascals, and one megapascals is 7,500.615758 millimeters of mercury.
A megapascal is 1,000 kilopascals, or one million pascals. It is used for concrete strength, where structural concrete is typically specified between 20 and 40 MPa.
- 1 mmHg= 1.3332e-4 MPa
- 2 mmHg= 2.6664e-4 MPa
- 5 mmHg= 6.6661e-4 MPa
Millimeters of mercury to Bar
One millimeters of mercury is 0.001333 bar, and one bar is 750.061576 millimeters of mercury.
One bar is exactly 100,000 pascals, slightly less than one atmosphere. It is used for tyre pressure, industrial gases and weather charts.
- 1 mmHg= 0.001333 bar
- 2 mmHg= 0.002666 bar
- 5 mmHg= 0.006666 bar
Millimeters of mercury to Millibar
One millimeters of mercury is 1.333224 millibar, and one millibar is 0.750062 millimeters of mercury.
A millibar is 100 pascals, identical to the hectopascal used in weather reports. Average sea-level pressure is about 1,013 millibars.
- 1 mmHg= 1.333224 mbar
- 2 mmHg= 2.666448 mbar
- 5 mmHg= 6.666119 mbar
Millimeters of mercury to Atmospheres
One millimeters of mercury is 0.001316 atmospheres, and one atmospheres is 759.999892 millimeters of mercury.
One atmosphere is exactly 101,325 pascals, the average air pressure at sea level. It is used for gas calculations and diving tables.
- 1 mmHg= 0.001316 atm
- 2 mmHg= 0.002632 atm
- 5 mmHg= 0.006579 atm
Millimeters of mercury to Pounds per square inch
One millimeters of mercury is 0.019337 pounds per square inch, and one pounds per square inch is 51.714925 millimeters of mercury.
One psi (pound per square inch) is 6,894.757293168 pascals. It is the tyre-pressure and hydraulic unit in the United States and the UK.
- 1 mmHg= 0.019337 psi
- 2 mmHg= 0.038674 psi
- 5 mmHg= 0.096684 psi
Open the Millimeters of mercury to Pounds per square inch converter
Millimeters of mercury to Inches of mercury
One millimeters of mercury is 0.03937 inches of mercury, and one inches of mercury is 25.400003 millimeters of mercury.
One inch of mercury is 3,386.389 pascals. It is used for barometric pressure and altimeter settings in aviation in the United States.
- 1 mmHg= 0.03937 inHg
- 2 mmHg= 0.07874 inHg
- 5 mmHg= 0.19685 inHg
Open the Millimeters of mercury to Inches of mercury converter
What millimeters of mercury are used for
One millimeter of mercury is 133.322387415 pascals. It is still used for blood-pressure readings, where 120/80 mmHg is the familiar healthy range.
Bar, atmosphere and psi are exact definitions. Gauges and weather stations round heavily, so treat the last digit as indicative rather than precise.
Pressure units are all defined against the pascal, so the conversion is a multiplication by a fixed number. What makes this dimension awkward is that the numbers sit within tens of per cent of each other, so a small slip looks plausible.
Three of the units are close together on purpose: one bar is 100,000 pascals, one atmosphere is 101,325, and weather reports use millibars and hectopascals, which are the same size. A reading that looks like a unit error is often a genuine difference between gauge pressure and absolute pressure instead.
Checking a pressure conversion means converting through pascals and comparing with a known reference, such as the fact that a bar and an atmosphere differ by about 1.3%. The error to watch for is quoting a pressure without saying whether it is measured above atmospheric pressure or from a vacuum.
Millimeters of mercury conversion tables
Millimeters of mercury to Pascals
| Millimeters of mercury (mmHg) | Pascals (Pa) |
|---|---|
| 1 | 133.322387 |
| 2 | 266.644775 |
| 3 | 399.967162 |
| 4 | 533.28955 |
| 5 | 666.611937 |
| 10 | 1,333.223874 |
| 25 | 3,333.059685 |
| 50 | 6,666.119371 |
| 100 | 13,332.238742 |
Millimeters of mercury to Kilopascals
| Millimeters of mercury (mmHg) | Kilopascals (kPa) |
|---|---|
| 1 | 0.133322 |
| 2 | 0.266645 |
| 3 | 0.399967 |
| 4 | 0.53329 |
| 5 | 0.666612 |
| 10 | 1.333224 |
| 25 | 3.33306 |
| 50 | 6.666119 |
| 100 | 13.332239 |
Millimeters of mercury to Megapascals
| Millimeters of mercury (mmHg) | Megapascals (MPa) |
|---|---|
| 1 | 1.3332e-4 |
| 2 | 2.6664e-4 |
| 3 | 3.9997e-4 |
| 4 | 5.3329e-4 |
| 5 | 6.6661e-4 |
| 10 | 0.001333 |
| 25 | 0.003333 |
| 50 | 0.006666 |
| 100 | 0.013332 |