A bar is exactly 100,000 pascals.
Bars to Torrs Converter — bar to Torr
Convert Bar (bar) to Torr (Torr) using the exact conversion factor (1 bar = 750.0616827 torr). See the formula, worked examples, conversion table, history, and common uses.
Bars to Torrs converter
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
A torr is 1/760 standard atmosphere.
Result = input x 100000 / 133.3223684.
Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Bars to Torrs
Bar and Torr are both scientific-measurement units, spanning everything from atomic and laboratory scales to astronomical distances — the kind of conversion that comes up constantly in physics, chemistry, and astronomy when a result needs to move between conventions used in different subfields. Bar is most often used for tire pressure specifications outside the us.
Formula
torrs = bars × 750.061682704
This factor comes from each unit's defined relationship to the category's base unit: 1 bar equals 100000 base units, and 1 torr equals 133.322368421 base units, so dividing one by the other gives the direct bar-to-torr factor of 750.061682704.
Simple example
1 bar × 750.0616827 = 750.0616827 Torr
1 bar = 750.0616827 torrs.
Real-world example
10 bar × 750.0616827 = 7,500.616827 Torr
10 bars = 7,500.616827 torrs.
Conversion table
| Bar (bar) | Torr (Torr) |
|---|---|
| 0.001 bar | 0.7500616827 Torr |
| 0.01 bar | 7.500616827 Torr |
| 1 bar | 750.0616827 Torr |
| 10 bar | 7,500.616827 Torr |
| 100 bar | 75,006.16827 Torr |
| 1,000 bar | 750,061.6827 Torr |
Reverse conversion: Torr to Bar
750.0616827 Torr × 0.001333223684 = 1 bar
750.0616827 torrs = 1 bars.
bars = torrs × 0.00133322368421
For a page dedicated to this direction, see Torr to Bar.
Understanding the Bar
Bar (bar) measures pressure. A bar is defined as exactly 100,000 pascals, close to (but distinct from) one standard atmosphere (101,325 Pa). It is classified as a Non-SI metric unit accepted for use with SI.
Where it's used: Widely used in Europe and most of the world for tire pressure, weather, and industrial pressure
Uses of the Bar today
- Tire pressure specifications outside the US
- Meteorology (weather maps commonly use millibars, hPa)
- Industrial and hydraulic pressure ratings in metric-system countries
History of the Bar
The bar was proposed by Norwegian meteorologist Vilhelm Bjerknes around 1906 as a convenient round pressure unit close to atmospheric pressure, derived from the CGS unit system (one bar equals one million dynes per square centimeter).
Though not an SI unit, the bar remains in wide practical use, particularly in meteorology (as the millibar, now more often written as the equivalent hectopascal) and in tire and hydraulic pressure specifications across most of the world.
Historical origin. Bar was not the invention of a single named person; it developed through the process described above.
Understanding the Torr (Torr)
A torr is 1/760 standard atmosphere.
Bar — sources
- BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the bar among accepted non-SI pressure units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many torrs are in 1 bar?
1 bar equals 750.0616827 torrs, using the exact defined conversion factor rather than an estimate.
How do I convert bar to torr?
Multiply the bar value by 750.0616827. The converter above does this instantly to whatever precision you set.
How do I convert torr back to bar?
Use the reverse factor: 1 torr equals 0.0013332237 bars. You can also use the swap control in the converter above to flip the direction instantly.
What is a bar?
Bar (bar) measures pressure. A bar is defined as exactly 100,000 pascals, close to (but distinct from) one standard atmosphere (101,325 Pa). It is classified as a Non-SI metric unit accepted for use with SI.
What is a torr?
Torr (Torr) is a unit of scientific units.
Is the bar to torr conversion exact?
Yes. A bar is defined as exactly 100,000 pascals, close to (but distinct from) one standard atmosphere (101,325 Pa). That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
Where is the bar still used today?
Widely used in Europe and most of the world for tire pressure, weather, and industrial pressure
Why does this category span everything from atomic to astronomical scales?
Scientific work spans an enormous range of physical scales, from atomic distances (measured in angstroms or atomic mass units) to interstellar distances (measured in astronomical units or parsecs), so this category groups SI-derived and scale-specific units that researchers commonly need to convert between within their field.