Convert Barye to Millimeters of Mercury
Convert Barye (Ba) to Millimeters of Mercury (mmHg) instantly and accurately.
Conversion Formula
mmHg = Ba × 0.0007500615758
About Barye
The barye (Ba) is the CGS unit of pressure - 1 dyne/cm² = exactly 0.1 Pa = 1 µbar. Standard atmosphere = 1,013,250 Ba. It dominated physics and laboratory science from the mid-19th century until SI adoption. Legacy acoustic CGS literature used 1 barye (0.1 Pa) as the underwater reference pressure, creating a 100 dB offset versus the modern 1 µPa reference - a critical correction when comparing historical and modern underwater acoustics databases. Still encountered in classical fluid mechanics derivations and early 20th-century meteorological literature. 1 Ba = 0.1 Pa.
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
| Barye (Ba) | Millimeters of Mercury (mmHg) |
|---|---|
| 1 Ba | 0.000750062 mmHg |
| 2 Ba | 0.00150012 mmHg |
| 5 Ba | 0.00375031 mmHg |
| 10 Ba | 0.00750062 mmHg |
| 25 Ba | 0.0187515 mmHg |
| 50 Ba | 0.0375031 mmHg |
| 100 Ba | 0.0750062 mmHg |