Convert pressure units — pascal, PSI, bar, atmosphere, torr, mmHg and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 Torr | 0.00133322 mbar | |
| 0.01 Torr | 0.0133322 mbar | |
| 0.1 Torr | 0.133322 mbar | |
| 1 Torr | 1.33322 mbar | |
| 5 Torr | 6.6661 mbar | |
| 10 Torr | 13.3322 mbar | |
| 50 Torr | 66.661 mbar | |
| 100 Torr | 133.322 mbar | |
| 1000 Torr | 1333.22 mbar |
Formula: Millibar = Torr × 1.333
Multiply any torr value by 1.333 to get millibar.
Reverse: Torr = Millibar × 0.7501
Common torr values — factor: 1 Torr = 1.333 mbar
| Torr (Torr) | Millibar (mbar) | Context |
|---|---|---|
| 0.001 Torr | 0.001333 mbar | Ultra-high vacuum |
| 0.01 Torr | 0.01333 mbar | High vacuum |
| 0.1 Torr | 0.1333 mbar | Medium vacuum |
| 1 Torr | 1.333 mbar | Low vacuum |
| 10 Torr | 13.33 mbar | Rough vacuum |
| 100 Torr | 133.3 mbar | Near-vacuum |
| 760 Torr | 1,013 mbar | 1 atm / sea level |
| 1,000 Torr | 1,333 mbar | Slight above atm |
| 7,600 Torr | 1.013e+04 mbar | 10 atm |
| 1e+04 Torr | 1.333e+04 mbar | 100 mbar |
| 7.6e+04 Torr | 101,300 mbar | 100 atm |
| 100,000 Torr | 133,300 mbar | 1.3 atm |
| 760,000 Torr | 1,013,000 mbar | 1,000 atm |
| 1,000,000 Torr | 1,333,000 mbar | High pressure |
| 10,000,000 Torr | 13,330,000 mbar | Very high |
1 Torr = 1.333 mbar. Memorize for instant estimates.
Use 1.333 as a quick mental multiplier.
Multiply result by 0.7501 to recover the original Torr value.
Converts pressure units between measurement systems for equipment specifications.
Uses pressure conversions in experimental data and calculations.
Reads and converts pressure gauge readings across different unit systems.
Converts pressure units for clinical measurements and equipment settings.
Converts pressure units for physics, chemistry, and engineering coursework.
Verifies pressure specifications meet requirements in the correct unit system.
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.
The millibar (mbar) equals 0.001 bar or 100 pascals, and is numerically identical to the hectopascal (hPa). It became the standard unit for surface pressure in international meteorology in the 20th century.
Weather maps and forecasts worldwide use millibars or hectopascals for surface pressure. Standard sea-level pressure is 1013.25 mbar. Hurricanes and typhoons are characterized by very low central pressures — Hurricane Patricia (2015) reached 872 mbar.
Interesting fact: A 1 mbar pressure difference over 111 km (1° latitude) drives a wind of approximately 1 m/s in mid-latitudes, which is why steep pressure gradients produce strong winds.
Converting torr to millibar 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 Torr = 6.666 mbar and 10 Torr = 13.33 mbar. For the reverse: 1 mbar = 0.7501 Torr. The exact factor is 1 Torr = 1.333 mbar.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.