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Vacuum

Torrtombar

Convert torr (vacuum) (Torr) to millibars (vacuum) (mbar).

Factor1 Torr = 1.333224 mbar

Converter

Torr

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

Result
1013.25mbar

Rendered to 6 significant figures.

Formula

Formula
mbar = Torr × 1.333224

Multiply any value in torr (vacuum) by 1.333224 to obtain the value in millibars (vacuum).

Worked example

Convert 760 Torr to mbar.

  1. 01Start with 760 Torr.
  2. 02Multiply by the conversion factor: 760 × 1.333224 = 1013.25 mbar.
Result760 Torr = 1013.25 mbar

Conversion table

Torrmbar
11.3332
22.6664
56.6661
1013.332
2026.664
5066.661
100133.32
200266.64
500666.61
10001333.2

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from Torr to mbar?
1 Torr equals 1.333224 mbar. To convert, multiply the value in torr (vacuum) by 1.333224.
How do I convert 1 Torr to mbar?
1 Torr = 1.33322 mbar. For any value, multiply by 1.333224.
How do I convert mbar back to Torr?
Divide by the same factor — or equivalently, multiply by 0.7500617. So 1 mbar = 0.750062 Torr.
When would I need to convert torr (vacuum) to millibar (vacuum)?
Vacuum-pressure conversions between Torr and mbar 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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