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Vacuum

mmHgtokPa

Convert millimetres of mercury (vacuum) (mmHg) to kilopascals (vacuum) (kPa).

Factor1 mmHg = 0.1333224 kPa

Converter

mmHg

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

Result
101.325kPa

Rendered to 6 significant figures.

Formula

Formula
kPa = mmHg × 0.1333224

Multiply any value in millimetres of mercury (vacuum) by 0.1333224 to obtain the value in kilopascals (vacuum).

Worked example

Convert 760 mmHg to kPa.

  1. 01Start with 760 mmHg.
  2. 02Multiply by the conversion factor: 760 × 0.1333224 = 101.325 kPa.
Result760 mmHg = 101.325 kPa

Conversion table

mmHgkPa
10.13332
20.26664
50.66661
101.3332
202.6664
506.6661
10013.332
20026.664
50066.661
1000133.32

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from mmHg to kPa?
1 mmHg equals 0.1333224 kPa. To convert, multiply the value in millimetres of mercury (vacuum) by 0.1333224.
How do I convert 1 mmHg to kPa?
1 mmHg = 0.133322 kPa. For any value, multiply by 0.1333224.
How do I convert kPa back to mmHg?
Divide by the same factor — or equivalently, multiply by 7.500616. So 1 kPa = 7.50062 mmHg.
When would I need to convert millimetre of mercury (vacuum) to kilopascal (vacuum)?
Vacuum-pressure conversions between mmHg and kPa 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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