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To convert from millimeter of mercury (mmHg) to megapascal (MPa), use the following formula:
megapascal (MPa)
= 0.133322 × 11000× millimeter of mercury (mmHg)
= 0.000133322× millimeter of mercury (mmHg)
Let's convert 5 millimeter of mercury (mmHg) to megapascal (MPa).
Using the formula:
5 × 0.000133322 = 0.00066661
Therefore, 5 millimeter of mercury (mmHg) is equal to 0.00066661 megapascal (MPa).
How many millimeters of mercury are in one megapascal? One megapascal (MPa) contains 7500.637554192106329 millimeters of mercury (mmHg) — the inverse of the factor above. Multiplying by 0.000133322 takes you from millimeters of mercury to megapascals; multiplying by 7500.637554192106329 brings you back.
Put in words: one millimeter of mercury equals 0.000133322 megapascals, so the millimeter of mercury is the smaller unit of this pair. Converting between them never changes the amount of pressure being measured — only the size of the unit you count it in.
A millimeter of mercury (mmHg) is a manometric unit of pressure.
It was historically defined as the pressure generated by a column of mercury exactly one millimeter high.
Today, it is most famous as the unit used in medicine for measuring blood pressure. It is also commonly used in meteorology, aviation, and physics to measure atmospheric pressure or vacuum pressure.
The mmHg unit originates from the invention of the barometer by Evangelista Torricelli in 1643.
Torricelli's device measured atmospheric pressure by seeing how high it could support a column of mercury in a tube.
Standard atmospheric pressure was found to support a column approximately 760 mm high, which established 760 mmHg as a standard reference point.
The most well-known application of mmHg is in medicine.
Blood Pressure: Readings are given as two numbers: systolic pressure (when the heart beats) over diastolic pressure (when the heart rests), such as 120/80 mmHg. This is a critical vital sign for human health.
Meteorology: Used for reporting barometric (atmospheric) pressure, which helps in weather forecasting.
Physics & Engineering: Used for measuring vacuum pressures and other low-pressure systems where precision is needed.
While mmHg is common, other pressure units are standard in different fields. Here are the most common conversions:
If you've ever looked at engineering specifications, construction materials, or high-pressure equipment, you've likely seen the term 'MPa.'
A megapascal (MPa) is a unit of pressure in the metric system, equal to one thousand kilopascals (1000 kPa).
The plural form is megapascals.
The megapascal (MPa) is a fundamental unit for quantifying the strength of materials in engineering and construction.
It is commonly used to express a material's ultimate tensile strength (the maximum stress it can withstand while being pulled apart) and compressive strength (its resistance to being squeezed).
For example, structural steel might have a tensile strength of 400 MPa. In comparison, high-performance concrete can have a compressive strength exceeding 80 MPa.
Understanding how to convert megapascals to other pressure units is crucial for global applications.
Here are the most common conversions:
The pound per square inch (PSI) is a unit commonly used in the United States for measuring tire pressure and hydraulic systems.
The bar is a unit often used in Europe for weather forecasting and scuba diving.
Megapascals are used to describe immense pressures found in both natural and industrial settings.
The water pressure at the bottom of the Mariana Trench, the deepest point in the ocean, is about 108.6 MPa.
In industry, a high-pressure waterjet cutter operates at pressures ranging from 200 to 600 MPa, demonstrating enough force to slice through metal and stone.
Here are some quick reference conversions from millimeter of mercury (mmHg) to megapascal (MPa):
| millimeters of mercury | megapascals |
|---|---|
| 0.000001 mmHg | 1.33322× 10-10 MPa |
| 0.001 mmHg | 1.33322× 10-7 MPa |
| 0.1 mmHg | 0.0000133322 MPa |
| 1 mmHg | 0.000133322 MPa |
| 2 mmHg | 0.000266644 MPa |
| 3 mmHg | 0.000399966 MPa |
| 4 mmHg | 0.000533288 MPa |
| 5 mmHg | 0.00066661 MPa |
| 6 mmHg | 0.000799932 MPa |
| 7 mmHg | 0.000933254 MPa |
| 8 mmHg | 0.001066576 MPa |
| 9 mmHg | 0.001199898 MPa |
| 10 mmHg | 0.00133322 MPa |
| 20 mmHg | 0.00266644 MPa |
| 30 mmHg | 0.00399966 MPa |
| 40 mmHg | 0.00533288 MPa |
| 50 mmHg | 0.0066661 MPa |
| 100 mmHg | 0.0133322 MPa |
| 1000 mmHg | 0.133322 MPa |
| 10000 mmHg | 1.33322 MPa |
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