Convert Bars to Millimeters of Mercury
Convert Bars (bar) to Millimeters of Mercury (mmHg) instantly and accurately.
Conversion Formula
mmHg = bar × 750.0615758
About Bars
A bar = exactly 100,000 Pa ≈ 0.987 atm - the world standard for industrial pressure outside North America. Hydraulic systems, pneumatic equipment, gas cylinders, dive computers, and tyre gauges in Europe and Asia use bar. Scuba diving: +1 bar per 10 m depth; at 40 m recreational limit = 5 bar absolute. European tyre pressure labels show bar alongside kPa. Industrial processes: steam at 10-50 bar; high-pressure reactors 100-300 bar; water-jet cutting 1,000-4,000 bar. 1 bar = 100,000 Pa = 14.504 psi.
About Millimeters of Mercury
One millimetre of mercury (mmHg) = pressure from 1 mm of mercury at 0°C and standard gravity = 133.322 Pa. Clinical medicine worldwide uses mmHg for blood pressure (normal ~120/80 mmHg) and for gas partial pressures in physiology: arterial O₂ ~95-100 mmHg; CO₂ ~40 mmHg; alveolar O₂ ~104 mmHg. Ophthalmologists measure intraocular pressure in mmHg (normal 10-21; glaucoma risk above 21). Vacuum equipment ratings are also given in mmHg. 760 mmHg = 1 atm. 1 mmHg = 133.322 Pa.
Quick Reference Table
| Bars (bar) | Millimeters of Mercury (mmHg) |
|---|---|
| 1 bar | 750.062 mmHg |
| 2 bar | 1500.12 mmHg |
| 5 bar | 3750.31 mmHg |
| 10 bar | 7500.62 mmHg |
| 25 bar | 18751.5 mmHg |
| 50 bar | 37503.1 mmHg |
| 100 bar | 75006.2 mmHg |