Torr to Bar Conversion Chart
| Torr (mmHg) (mmHg) | Bar (bar) | Reference Benchmark | Formula Step |
|---|---|---|---|
| 1 mmHg | 0.001333224 bar | One Millimeter of Mercury Classical Barometric Unit Standard | 1 × 0.001333224 = 0.001333224 bar |
| 5 mmHg | 0.00666612 bar | Low-Pressure Chemical Vapor Deposition (LPCVD) Chamber | 5 × 0.001333224 = 0.00666612 bar |
| 10 mmHg | 0.01333224 bar | Pharmaceutical Solvent Rotary Evaporation Vacuum Level | 10 × 0.001333224 = 0.01333224 bar |
| 20 mmHg | 0.02666448 bar | Water Vapor Saturation Partial Pressure at Room Temp (22°C) | 20 × 0.001333224 = 0.02666448 bar |
| 50 mmHg | 0.0666612 bar | Industrial Freeze-Drying Primary Desiccation Stage Vacuum | 50 × 0.001333224 = 0.0666612 bar |
| 75 mmHg | 0.0999918 bar | Near-Tenth Bar Low Pressure Vacuum Holding Chamber | 75 × 0.001333224 = 0.0999918 bar |
| 100 mmHg | 0.1333224 bar | Physiological Mean Arterial Blood Pressure Typical Level | 100 × 0.001333224 = 0.1333224 bar |
| 200 mmHg | 0.2666448 bar | Commercial Airliner Emergency Cabin Oxygen Deployment | 200 × 0.001333224 = 0.2666448 bar |
| 380 mmHg | 0.5066251 bar | Half Atmospheric Standard Barometric Column Pressure | 380 × 0.001333224 = 0.5066251 bar |
| 500 mmHg | 0.666612 bar | Medium Altitude Mountain Settlement Ambient Air Pressure | 500 × 0.001333224 = 0.666612 bar |
| 750 mmHg | 0.999918 bar | Near-Bar Reference Pressure at Sea Level Weather Front | 750 × 0.001333224 = 0.999918 bar |
| 760 mmHg | 1.01325 bar | Standard Atmospheric Pressure Defined Sea Level Mercury | 760 × 0.001333224 = 1.01325 bar |
| 1000 mmHg | 1.333224 bar | Medical Autoclave Overpressure Decontamination Chamber | 1000 × 0.001333224 = 1.333224 bar |
| 1500 mmHg | 1.999836 bar | Two-Bar Industrial Pressure Vessel Mercury Equivalent | 1500 × 0.001333224 = 1.999836 bar |
| 2000 mmHg | 2.666448 bar | High-Pressure Laboratory Reactor Mercury Scale Benchmark | 2000 × 0.001333224 = 2.666448 bar |
Torr (mmHg) to Bar Formula & Unit Definitions
The mathematical foundation between torr and bar originates from atmospheric definitions: 1 atm = 760 torr = 1.01325 bar. Therefore, 1 torr = 1.01325 ÷ 760 = 0.001333224 bar (exactly 1.333224 millibars). To convert torr to bar, multiply the torr figure by 0.001333224 (or divide by 750.0615). To convert bar back into torr, multiply bar by 750.0615 (or divide by 0.001333224).
Quick Estimation: Divide the torr reading by 750. For instance, 750 torr ÷ 750 = 1 bar (exact is 0.999918 bar); 1,500 torr ÷ 750 = 2 bar (exact is 1.999836 bar); 75 torr ÷ 750 = 0.1 bar (exact is 0.099992 bar).
Torr Standard (Torr / mmHg)
Manometric Vacuum Baseline- Creator & Origin: Named in honor of Evangelista Torricelli, who invented the liquid mercury barometer in 1643.
- Standard Definition: Defined as exactly 1/760 of a standard atmosphere (101,325 ÷ 760 ≈ 133.3224 Pa).
- Everyday Focus: Pharmaceutical freeze-drying chambers, vacuum degassing columns, and clinical blood pressure (mmHg).
Bar Standard (bar)
Metric Engineering Baseline- Creator & Origin: Introduced in 1909 by British meteorologist William Napier Shaw from the Greek 'baros' (weight).
- Standard Definition: Defined as exactly 100,000 pascals (100 kPa or 0.1 MPa) of uniform perpendicular surface force.
- Everyday Focus: Pneumatic compressor circuits, steam boiler ratings, hydraulic manifolds, and scuba tank pressure.
Frequently Asked Questions
Q.How many bar are in one torr?
One torr equals approximately 0.001333224 bar (or 1.333224 millibars).
Q.What is the reverse conversion from bar to torr?
To convert in reverse, use the Bar to Torr Converter where 1 bar equals ~750.0615 torr.
Q.What is 760 torr in bar?
760 torr equals exactly 1.01325 bar (one standard atmosphere).
Q.What is 750 torr in bar?
750 torr equals approximately 0.999918 bar (virtually 1 bar).
Q.How do you convert torr to millibars (mbar)?
Multiply your torr reading by 1.333224 (e.g. 10 torr × 1.333224 ≈ 13.33 mbar).