Convert Megapascal to Millimeter of Mercury (MPa → mmHg)

The megapascal is the engineering high-pressure unit, used in hydraulics, materials testing, and construction.

Megapascal

Millimeter of Mercury

7,500.6158

1 MPa7,500.6158 mmHgNIST · BIPM accuracy

Megapascal to Millimeter of Mercury Conversion Table

10 common values

Megapascal	Millimeter of Mercury
1 MPa	7,500.6158 mmHg
5 MPa	37,503.079 mmHg
10 MPa	75,006.158 mmHg
25 MPa	187,515.39 mmHg
50 MPa	375,030.79 mmHg
100 MPa	750,061.58 mmHg
200 MPa	1,500,123.2 mmHg
500 MPa	3,750,307.9 mmHg
1,000 MPa	7,500,615.8 mmHg
5,000 MPa	37,503,079 mmHg

How to Convert Megapascal to Millimeter of Mercury Manually

Step by Step

Converting megapascals to millimeters of mercury is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1
Take your value in megapascals
Start with the number of megapascals (MPa) you want to convert.
2
Multiply by 7,500.6158
The conversion factor from MPa to mmHg is 7,500.6158. Multiply your value by this number.
3
Read the result in millimeters of mercury
The result is your value in millimeters of mercury (mmHg).

Practical Examples

1 MPa

equals

7,500.6158 mmHg

5 MPa

equals

37,503.079 mmHg

10 MPa

equals

75,006.158 mmHg

25 MPa

equals

187,515.39 mmHg

100 MPa

equals

750,061.58 mmHg

Formula

Multiply the value in megapascals by 7,500.6158. For the reverse direction, multiply by 0.000133.

ForwardmmHg = MPa × 7,500.6158

ReverseMPa = mmHg × 0.000133

Example: 10 MPa × 7,500.6158 = 75,006.158 mmHg

Tips

Use these in everyday conversions

1 MPa = 10 bar = 145 psi.
N/mm² = MPa (same unit, different notation).
Use MPa for material science; bar for fluid dynamics.

Common Mistakes

Avoid these

Confusing MPa with MW or MJ.
Using 1 MPa = 100 bar — that's incorrect; it's 10 bar.
Mixing MPa and kPa without conversion in mixed docs.

About Megapascal and Millimeter of Mercury

What is the Megapascal?

The megapascal equals 1,000,000 pascals (or 10 bar) and is the engineering high-pressure unit used in hydraulics, materials testing, and construction. Concrete compressive strength is rated in MPa (typical residential concrete is 20–35 MPa, structural concrete 35–70 MPa, high-strength up to 140 MPa), and steel yield strengths are 250–700 MPa for structural grades. Hydraulic systems operate at 10–70 MPa, and high-pressure-water-jet cutting reaches 400 MPa. The megapascal is dimensionally identical to N/mm² (newtons per square millimeter), making it natural for engineering calculations involving small areas. Earth's mantle pressure reaches gigapascals (1 GPa = 1,000 MPa). The MPa relates to the pascal (10⁶ Pa = 1 MPa), the bar (10 bar = 1 MPa), the psi (1 MPa ≈ 145.04 psi), and the atmosphere (1 MPa ≈ 9.87 atm). It is the standard unit in modern engineering specifications worldwide.

Hydraulic system pressures
Concrete and steel strength specifications
High-pressure industrial processes

Real-world examples

Concrete compressive strength: 20–60 MPa. Hydraulic press: 30–70 MPa. Steel yield strength: 250+ MPa.

What is the Millimeter of Mercury?

The millimeter of mercury equals approximately 133.322 pascals and is the universal medical unit for blood pressure measurements worldwide. Normal blood pressure is around 120/80 mmHg (systolic/diastolic). The unit's origin is the manometer: a column of mercury rises 1 mm for every 133 Pa of pressure difference. Mercury barometers historically measured atmospheric pressure (760 mmHg = 1 atm at sea level). Beyond medicine, mmHg appears in vacuum-system specifications, certain laboratory contexts, and altimeter settings (in inHg in the US, in mmHg or hPa elsewhere). The mmHg relates to the torr (1 mmHg ≈ 1.0000003 torr — essentially identical), the pascal (1 mmHg ≈ 133.3 Pa), the atmosphere (760 mmHg = 1 atm), and inches of mercury (1 inHg = 25.4 mmHg). The unit's persistence in medicine reflects historical inertia and the precision of mercury manometers.