Vacuum
bartommHg
Convert bar (vacuum) (bar) to millimetres of mercury (vacuum) (mmHg).
Factor1 bar = 750.0616 mmHg
Converter
bar
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mmHg
Rendered to 6 significant figures.
Formula
Formula
mmHg = bar × 750.0616
Multiply any value in bar (vacuum) by 750.0616 to obtain the value in millimetres of mercury (vacuum).
Worked example
Convert 1 bar to mmHg.
- 01Start with 1 bar.
- 02Multiply by the conversion factor: 1 × 750.0616 = 750.062 mmHg.
Result1 bar = 750.062 mmHg
Conversion table
| bar | mmHg |
|---|---|
| 1 | 750.06 |
| 2 | 1500.1 |
| 5 | 3750.3 |
| 10 | 7500.6 |
| 20 | 15001 |
| 50 | 37503 |
| 100 | 75006 |
| 200 | 1.5001e+5 |
| 500 | 3.7503e+5 |
| 1000 | 7.5006e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from bar to mmHg?
1 bar equals 750.0616 mmHg. To convert, multiply the value in bar (vacuum) by 750.0616.
How do I convert 1 bar to mmHg?
1 bar = 750.062 mmHg. For any value, multiply by 750.0616.
How do I convert mmHg back to bar?
Divide by the same factor — or equivalently, multiply by 0.001333224. So 1 mmHg = 0.00133322 bar.
When would I need to convert bar (vacuum) to millimetre of mercury (vacuum)?
Vacuum-pressure conversions between bar and mmHg are common in vacuum-chamber instrumentation, pump-down endpoint specification, semiconductor and deposition process work, freeze-drying, electron-microscopy column pressure, vacuum metallurgy and HVAC / refrigeration service. Torr, mmHg and inHg dominate manometric vacuum gauges; mbar is standard on European instruments; micron Hg and mTorr cover high-vacuum work; Pa and kPa are the SI references. This category is vacuum / instrumentation intent — dimensionally the same as pressure, but kept separate so process-pressure searches and vacuum searches stay on the right page.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).