Vacuum
mmHgtoPa
Convert millimetres of mercury (vacuum) (mmHg) to pascals (vacuum) (Pa).
Factor1 mmHg = 133.3224 Pa
Converter
mmHg
Accepts numbers or expressions, e.g. 150 + 14.7
Result
Pa
Rendered to 6 significant figures.
Formula
Formula
Pa = mmHg × 133.3224
Multiply any value in millimetres of mercury (vacuum) by 133.3224 to obtain the value in pascals (vacuum).
Worked example
Convert 760 mmHg to Pa.
- 01Start with 760 mmHg.
- 02Multiply by the conversion factor: 760 × 133.3224 = 101325 Pa.
Result760 mmHg = 101325 Pa
Conversion table
| mmHg | Pa |
|---|---|
| 1 | 133.32 |
| 2 | 266.64 |
| 5 | 666.61 |
| 10 | 1333.2 |
| 20 | 2666.4 |
| 50 | 6666.1 |
| 100 | 13332 |
| 200 | 26664 |
| 500 | 66661 |
| 1000 | 1.3332e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mmHg to Pa?
1 mmHg equals 133.3224 Pa. To convert, multiply the value in millimetres of mercury (vacuum) by 133.3224.
How do I convert 1 mmHg to Pa?
1 mmHg = 133.322 Pa. For any value, multiply by 133.3224.
How do I convert Pa back to mmHg?
Divide by the same factor — or equivalently, multiply by 0.007500616. So 1 Pa = 0.00750062 mmHg.
When would I need to convert millimetre of mercury (vacuum) to pascal (vacuum)?
Vacuum-pressure conversions between mmHg and Pa 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).