Convert Millimeters of Mercury to Bar
Instantly convert Millimeters of Mercury (mmHg) to Bar (bar) with our free online calculator.
Formula: mmHg to bar — multiply by 0.00133322
Reference Table
| Millimeters of Mercury (mmHg) | Bar (bar) |
|---|---|
| 1 | 0.00133322 |
| 5 | 0.0066661 |
| 10 | 0.0133322 |
| 25 | 0.0333305 |
| 50 | 0.066661 |
| 100 | 0.133322 |
How to Convert Millimeters of Mercury to Bar
Formula
To convert Millimeters of Mercury (mmHg) to Bar (bar): multiply by 0.00133322
Step-by-Step
- Start with your value in Millimeters of Mercury (mmHg).
- Multiply by 0.00133322 to perform the conversion.
- The result is your value expressed in Bar (bar).
Conversion Factor
1 mmHg = 0.00133322 bar
Reverse Factor
1 bar = 750.064 mmHg
Worked Example
Convert 25 Millimeters of Mercury to Bar: 25 mmHg = 0.0333305 bar
About Millimeters of Mercury (mmHg)
A unit of pressure historically defined as the pressure exerted by a 1-millimeter column of mercury at standard gravity. Millimeters of mercury are the default unit for clinical blood-pressure readings worldwide ("120 over 80") and intraocular pressure in ophthalmology. The mmHg is numerically almost identical to the torr (1 mmHg ≈ 1.0000007 torr). Barometric atmospheric pressure was historically quoted in mmHg as well — 760 mmHg = 1 atm.
About Bar (bar)
A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately equal to Earth's average sea-level atmospheric pressure. Not an SI unit but widely accepted for engineering use. Bars are the default unit in European industry for compressed gas, hydraulics, and process plants; car tire pressures in much of the world are quoted in bar (about 2.2 bar for a passenger car). Gauges on scuba equipment, brewery CO₂ tanks, and espresso machines typically read in bar.
Quick Facts
- 1 Millimeters of Mercury equals 0.00133322 Bar
- 1 Bar equals 750.064 Millimeters of Mercury
- Millimeters of Mercury is a unit of pressure
- Bar is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Millimeters of Mercury belongs to the metric system
Common Millimeters of Mercury to Bar Conversions
| Millimeters of Mercury (mmHg) | Bar (bar) |
|---|---|
| 0.1 | 0.000133322 |
| 0.5 | 0.00066661 |
| 1 | 0.00133322 |
| 2 | 0.00266644 |
| 5 | 0.0066661 |
| 10 | 0.0133322 |
| 14.696 | 0.019593 |
| 15 | 0.0199983 |
| 20 | 0.0266644 |
| 25 | 0.0333305 |
| 50 | 0.066661 |
| 100 | 0.133322 |
| 150 | 0.199983 |
| 200 | 0.266644 |
| 500 | 0.66661 |
| 1000 | 1.33322 |
Understanding Millimeters of Mercury
The Millimeters of Mercury (symbol: mmHg) is a unit of pressure. A unit of pressure historically defined as the pressure exerted by a 1-millimeter column of mercury at standard gravity. Millimeters of mercury are the default unit for clinical blood-pressure readings worldwide ("120 over 80") and intraocular pressure in ophthalmology. The mmHg is numerically almost identical to the torr (1 mmHg ≈ 1.0000007 torr). Barometric atmospheric pressure was historically quoted in mmHg as well — 760 mmHg = 1 atm.
It belongs to the metric measurement system.
Millimeters of Mercury are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Bar
The Bar (symbol: bar) is a unit of pressure. A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately equal to Earth's average sea-level atmospheric pressure. Not an SI unit but widely accepted for engineering use. Bars are the default unit in European industry for compressed gas, hydraulics, and process plants; car tire pressures in much of the world are quoted in bar (about 2.2 bar for a passenger car). Gauges on scuba equipment, brewery CO₂ tanks, and espresso machines typically read in bar.
It belongs to the metric measurement system.
Bar are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Millimeters of Mercury to Bar?
Engineers, mechanics, and scientists frequently need to convert pressure between Millimeters of Mercury and Bar when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Millimeters of Mercury to Bar?
A unit of pressure historically defined as the pressure exerted by a 1-millimeter column of mercury at standard gravity. To convert Millimeters of Mercury to Bar, multiply by 0.00133322. For example, 25 mmHg equals 0.0333305 bar.
How many Bar are in 1 Millimeters of Mercury?
There are 0.00133322 Bar in 1 Millimeters of Mercury.
How many Millimeters of Mercury are in 1 Bar?
There are 750.064 Millimeters of Mercury in 1 Bar.
What is the formula for Millimeters of Mercury to Bar conversion?
The formula is: multiply by 0.00133322. This means 1 mmHg = 0.00133322 bar.
Is a Millimeters of Mercury bigger than a Bar?
Yes. One Millimeters of Mercury is larger than one Bar because 1 mmHg equals 0.00133322 bar, which is less than 1.
When do you need to convert between Millimeters of Mercury and Bar?
A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately equal to Earth's average sea-level atmospheric pressure. Millimeters of Mercury and Bar are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.