How to convert mmHg to bar
To convert mmHg to bar, multiply by 0.00133322387415. Pressure conversions are used for tire inflation, weather, scuba diving, hydraulics and medical devices.

mmHg to Bar conversion table
| mmHg (mmHg) | Bar (bar) |
|---|---|
| 0.1 mmHg | 0.000133322387415 bar |
| 0.5 mmHg | 0.000666611937075 bar |
| 1 mmHg | 0.00133322387415 bar |
| 2 mmHg | 0.0026664477483 bar |
| 3 mmHg | 0.00399967162245 bar |
| 4 mmHg | 0.0053328954966 bar |
| 5 mmHg | 0.00666611937075 bar |
| 10 mmHg | 0.0133322387415 bar |
| 20 mmHg | 0.026664477483 bar |
| 25 mmHg | 0.0333305968538 bar |
| 50 mmHg | 0.0666611937075 bar |
| 100 mmHg | 0.133322387415 bar |
| 500 mmHg | 0.666611937075 bar |
| 1,000 mmHg | 1.33322387415 bar |
About the units
mmHg (mmHg)
Millimeters of mercury are used for blood pressure and barometric readings (1 mmHg ≈ 133.322 Pa).
Bar (bar)
A bar equals exactly 100,000 pascals, close to atmospheric pressure at sea level.
How to use this converter
- Type the number of mmHg (mmHg) in the input box.
- The result in bar appears instantly — no button needed.
- See the same value in every other pressure unit just below.
- Use “Swap units” to convert bar back to mmHg.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many bar are in one mmhg?
One mmhg equals 0.00133322387415 bar. 0.00133322387415 is the exact factor used by this converter.
How do I convert mmHg to bar?
Multiply the value in mmHg by 0.00133322387415. To go the other way, multiply bar by 750.061575846.
What is 10 mmHg in bar?
10 mmHg = 0.0133322387415 bar. Also, 5 mmHg = 0.00666611937075 bar and 100 mmHg = 0.133322387415 bar.
What is the difference between a mmhg and a bar?
Millimeters of mercury are used for blood pressure and barometric readings (1 mmHg ≈ 133.322 Pa). A bar equals exactly 100,000 pascals, close to atmospheric pressure at sea level.
Is this tool free and private?
Yes — the mmHg to Bar is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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