Convert pressure units — Pascal, bar, PSI, atm, Torr, mmHg.
| Unit | Name | Value |
|---|---|---|
| Pa | Pascal | 100000 |
| kPa | Kilopascal | 100 |
| atm | Atmosphere | 0.98692327 |
| psi | PSI | 14.503768 |
| Torr | Torr / mmHg | 750.06376 |
| inHg | Inch of Mercury | 29.529971 |
Formula: Torr = Bar × 750.1
Multiply any bar value by 750.1 to get torr.
Reverse: Bar = Torr × 0.001333
Common bar values — factor: 1 bar = 750.1 Torr
| Bar (bar) | Torr (Torr) | Context |
|---|---|---|
| 0.001 bar | 0.7501 Torr | 0.1 kPa |
| 0.01 bar | 7.501 Torr | 1 kPa |
| 0.1 bar | 75.01 Torr | 10 kPa |
| 1 bar | 750.1 Torr | 100 kPa / ~1 atm |
| 1.013 bar | 760 Torr | 1 standard atm |
| 2 bar | 1,500 Torr | 29 psi / car tire |
| 5 bar | 3,750 Torr | 72 psi |
| 10 bar | 7,501 Torr | 145 psi |
| 100 bar | 7.501e+04 Torr | 1,450 psi |
| 200 bar | 150,000 Torr | Scuba tank |
| 300 bar | 225,000 Torr | High-pressure system |
| 500 bar | 375,000 Torr | 5,000 psi |
| 1,000 bar | 750,100 Torr | 10,000 psi |
| 0.06895 bar | 51.72 Torr | 1 psi |
| 0.001333 bar | 0.9998 Torr | 1 mmHg |
1 bar = 750.1 Torr. Memorize for instant estimates.
Use 750.1 as a quick mental multiplier.
Multiply result by 0.001333 to recover the original bar value.
Monitors dive cylinder pressure in bar — standard in most of the world (200–300 bar).
Reads surface pressure maps in millibar (1 mbar = 0.001 bar) for weather forecasting.
Designs European hydraulic systems — pumps and actuators are rated in bar.
Controls fermentation vessel pressure (1–3 bar) and carbonation pressures in bar.
Specifies pipeline operating pressures and safety relief settings in bar.
Monitors tire pressure and boost pressure on turbocharged engines in bar.
The bar is a metric unit of pressure equal to exactly 100,000 pascals — very close to standard atmospheric pressure (1 atm = 1.01325 bar). It was introduced in 1909 and is widely used in Europe for weather forecasting, diving, and industrial applications.
Scuba diving cylinders are filled to 200–300 bar. Automotive tire pressure gauges often display in bar across Europe. Industrial compressors and hydraulic systems are commonly rated in bar.
Interesting fact: The millibar (mbar = hPa) is the standard unit for atmospheric pressure in meteorology worldwide. Standard sea-level atmospheric pressure is 1013.25 mbar.
The torr was named after Evangelista Torricelli, who invented the mercury barometer in 1644. One torr is defined as 1/760 of standard atmospheric pressure (133.322 Pa), and is equal to 1 mmHg at 0°C.
Torr is the standard pressure unit in vacuum science and semiconductor manufacturing. High vacuum systems operate at 10⁻³ to 10⁻⁷ torr. Ultra-high vacuum (used in particle accelerators) reaches below 10⁻¹⁰ torr.
Interesting fact: Torricelli's original barometer experiment used a 1-meter tube of mercury that settled at 760 mm above the reservoir — directly defining the unit that would later bear his name.
Converting bar to torr is a common task in engineering, medicine, meteorology, and science. Different industries and countries use different pressure units — PSI in the US, bar in Europe, mmHg in medicine, and pascals in physics — making accurate conversion essential for cross-disciplinary work.
Quick reference: 5 bar = 3750 Torr and 10 bar = 7501 Torr. For the reverse: 1 Torr = 0.001333 bar. The exact factor is 1 bar = 750.1 Torr.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.