Convert Barye to Micropascals

Convert Barye (Ba) to Micropascals (µPa) instantly and accurately.

Conversion Formula

µPa = Ba × 100000

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 Micropascals

A micropascal (µPa) is 10⁻⁶ Pa - the standard reference unit for sound pressure levels in acoustics. The threshold of human hearing in air is 20 µPa, which defines 0 dB SPL; underwater acoustics uses 1 µPa as its reference (0 dB re 1 µPa). Blue whale calls reach ~189 dB re 1 µPa at source. Industrial noise regulations, architectural acoustics, and loudspeaker sensitivity specifications all trace back to µPa reference levels. Solar wind pressure near Earth averages ~1-6 nPa, rising to hundreds of µPa during major solar storms. 1 µPa = 10⁻⁶ Pa.

Quick Reference Table

→ Full Pressure Converter