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Vacuum

µbartommHg

Convert microbar (vacuum) (µbar) to millimetres of mercury (vacuum) (mmHg).

Factor1 µbar = 0.0007500616 mmHg

Converter

µbar

Accepts numbers or expressions, e.g. 150 + 14.7

Result
0.750062mmHg

Rendered to 6 significant figures.

Formula

Formula
mmHg = µbar × 0.0007500616

Multiply any value in microbar (vacuum) by 0.0007500616 to obtain the value in millimetres of mercury (vacuum).

Worked example

Convert 1000 µbar to mmHg.

  1. 01Start with 1000 µbar.
  2. 02Multiply by the conversion factor: 1000 × 0.0007500616 = 0.750062 mmHg.
Result1000 µbar = 0.750062 mmHg

Conversion table

µbarmmHg
10.00075006
20.0015001
50.0037503
100.0075006
200.015001
500.037503
1000.075006
2000.15001
5000.37503
10000.75006

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from µbar to mmHg?
1 µbar equals 0.0007500616 mmHg. To convert, multiply the value in microbar (vacuum) by 0.0007500616.
How do I convert 1 µbar to mmHg?
1 µbar = 0.000750062 mmHg. For any value, multiply by 0.0007500616.
How do I convert mmHg back to µbar?
Divide by the same factor — or equivalently, multiply by 1333.224. So 1 mmHg = 1333.22 µbar.
When would I need to convert microbar (vacuum) to millimetre of mercury (vacuum)?
Vacuum-pressure conversions between µbar 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).

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