A torr is 1/760 standard atmosphere.
Torrs to Millibars Converter — Torr to mbar
Convert Torr (Torr) to Millibar (mbar) using the exact conversion factor (1 torr = 1.333223684 millibar). See the formula, worked examples, and conversion table.
Torrs to Millibars converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
A millibar is 100 pascals.
Result = input x 133.3223684 / 100.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Torrs to Millibars
Torr and Millibar both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: A torr is 1/760 standard atmosphere, and a millibar is 100 pascals.
Formula
millibars = torrs × 1.33322368421
This factor comes from each unit's defined relationship to the category's base unit: 1 torr equals 133.322368421 base units, and 1 millibar equals 100 base units, so dividing one by the other gives the direct torr-to-millibar factor of 1.33322368421.
Simple example
1 Torr × 1.333223684 = 1.333223684 mbar
1 torr = 1.333223684 millibars.
Real-world example
100 Torr × 1.333223684 = 133.3223684 mbar
100 torrs = 133.3223684 millibars.
Conversion table
| Torr (Torr) | Millibar (mbar) |
|---|---|
| 1 Torr | 1.333223684 mbar |
| 10 Torr | 13.33223684 mbar |
| 50 Torr | 66.66118421 mbar |
| 100 Torr | 133.3223684 mbar |
| 500 Torr | 666.6118421 mbar |
| 1,000 Torr | 1,333.223684 mbar |
Reverse conversion: Millibar to Torr
1.333223684 mbar × 0.7500616827 = 0.9999999998 Torr
1.333223684 millibars = 0.9999999998 torrs.
torrs = millibars × 0.750061682704
For a page dedicated to this direction, see Millibar to Torr.
Understanding the Torr (Torr)
A torr is 1/760 standard atmosphere.
Understanding the Millibar (mbar)
A millibar is 100 pascals.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millibars are in 1 torr?
1 torr equals 1.333223684 millibars, using the exact defined conversion factor rather than an estimate.
How do I convert torr to millibar?
Multiply the torr value by 1.333223684. The converter above does this instantly to whatever precision you set.
How do I convert millibar back to torr?
Use the reverse factor: 1 millibar equals 0.7500616827 torrs. You can also use the swap control in the converter above to flip the direction instantly.
What is a torr?
Torr (Torr) is a unit of engineering.
What is a millibar?
Millibar (mbar) is a unit of engineering.
Is the torr to millibar conversion exact?
Yes. Both torr and millibar are defined by fixed standards rather than physical artifacts, so the factor of 1.333223684 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.