Convert Barye to Millibars
Convert Barye (Ba) to Millibars (mbar) instantly and accurately.
Conversion Formula
mbar = Ba × 0.001
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 Millibars
A millibar (mbar) = 100 Pa = 1 hPa - the historically dominant meteorological pressure unit. Standard sea-level pressure is 1013.25 mbar. Hurricane intensity is characterised by central pressure: Category 5 storms typically below 920 mbar (US record: 892 mbar, 1935). Upper-air analysis levels - 850, 700, 500, 300, 200 mbar - appear throughout decades of archived meteorological data. Aircraft cabins are pressurised to ~750-800 mbar at cruise altitude. 'Weather bombs' see pressure fall 24+ mbar in 24 hours. 1 mbar = 100 Pa.
Quick Reference Table
| Barye (Ba) | Millibars (mbar) |
|---|---|
| 1 Ba | 0.001 mbar |
| 2 Ba | 0.002 mbar |
| 5 Ba | 0.005 mbar |
| 10 Ba | 0.01 mbar |
| 25 Ba | 0.025 mbar |
| 50 Ba | 0.05 mbar |
| 100 Ba | 0.1 mbar |