Convert pressure units — pascal, PSI, bar, atmosphere, torr, mmHg and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 mbar | 0.000750064 Torr | |
| 0.01 mbar | 0.00750064 Torr | |
| 0.1 mbar | 0.0750064 Torr | |
| 1 mbar | 0.750064 Torr | |
| 5 mbar | 3.75032 Torr | |
| 10 mbar | 7.50064 Torr | |
| 50 mbar | 37.5032 Torr | |
| 100 mbar | 75.0064 Torr | |
| 1000 mbar | 750.064 Torr |
Formula: Torr = Millibar × 0.7501
Multiply any millibar value by 0.7501 to get torr.
Reverse: Millibar = Torr × 1.333
Common millibar values — factor: 1 mbar = 0.7501 Torr
| Millibar (mbar) | Torr (Torr) | Context |
|---|---|---|
| 1 mbar | 0.7501 Torr | 0.1 kPa / light wind |
| 10 mbar | 7.501 Torr | 1 kPa |
| 100 mbar | 75.01 Torr | 10 kPa |
| 500 mbar | 375 Torr | 0.5 bar |
| 1,013 mbar | 760 Torr | 1 atm / sea level |
| 2,000 mbar | 1,500 Torr | 2 bar |
| 5,000 mbar | 3,750 Torr | 5 bar |
| 1e+04 mbar | 7,501 Torr | 10 bar |
| 100,000 mbar | 7.501e+04 Torr | 100 bar |
| 1,000,000 mbar | 750,100 Torr | 1,000 bar |
| 68.95 mbar | 51.72 Torr | 1 psi |
| 1.333 mbar | 0.9998 Torr | 1 mmHg |
| 33.86 mbar | 25.4 Torr | 1 inHg |
| 980.7 mbar | 735.6 Torr | 1 kgf/cm² |
| 10,000,000 mbar | 7,501,000 Torr | 10,000 bar |
1 mbar = 0.7501 Torr. Memorize for instant estimates.
Use 0.7501 as a quick mental multiplier.
Multiply result by 1.333 to recover the original mbar 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 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.
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 millibar 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 mbar = 3.75 Torr and 10 mbar = 7.501 Torr. For the reverse: 1 Torr = 1.333 mbar. The exact factor is 1 mbar = 0.7501 Torr.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.