Baryes to Bars (Ba to bar)

1 barye equals 0.000001 bars exactly.

1 barye = 0.000001 bars

How to convert baryes to bars

To convert baryes to bars, multiply the number of baryes by 0.000001. This factor is exact. To go the other way, multiply bars by 1,000,000.

bars = baryes × 0.000001

Example: 10 baryes = 0.00001 bars.

About these units

Barye (Ba)

CGS & old metricHistorical unit (no longer in standard use)

Exactly 0.1 pascal, the CGS unit of pressure (one dyne per square centimeter).

Tiny by everyday standards, the barye is the pressure unit of the centimeter-gram-second system. It is one dyne of force spread over one square centimeter, which works out to one gram per centimeter per second squared, or exactly 0.1 pascal. The same quantity has also been called a microbar, and older texts used other spellings and variants such as bary, barad and barrie.

Because of those names the barye is easy to confuse with the bar. In older usage the plain word bar sometimes meant one dyne per square centimeter, particularly in acoustics, a usage now regarded as incorrect. The modern bar is a million baryes, or 100,000 pascals. The barye fits the family of CGS units laid out after the 1873 British Association committee recommended the centimeter, gram and second, and it sits beside the dyne and the erg. It now survives mainly in older physics and acoustics literature. NIST lists the same value as dyne per square centimeter.

1 barye = 0.1 pascals (exactly).

Sources: Wikipedia: Barye; Wikipedia: Centimetre-gram-second system of units; NIST SP 811, Appendix B.8 conversion factors

Bar (bar)

Metric (SI)Current unit

Exactly 100,000 pascals, close to atmospheric pressure at sea level. Used for tire pressure, diving and industrial gauges.

Bar began as a name that meant different things to different people. It comes from the Ancient Greek baros, weight, and from 1793 to 1795 an early metric system used bar for a unit of mass equal to the modern tonne. The pressure bar was introduced by the Norwegian meteorologist Vilhelm Bjerknes, a founder of modern weather forecasting, who defined it as one megadyne per square centimeter. Some earlier writers had used bar for one dyne per square centimeter, a source of confusion.

The bar is a metric unit but not part of the SI, and its official symbol is simply bar, since the old b clashes with the barn and the bit. It has been legally recognized in EU countries since 2004, although NIST deprecates it except for limited use in meteorology.

Its size is handy because 1 bar is slightly less than average sea-level pressure, which is about 1.013 bar. In scuba diving every 10 meters of seawater adds about 1 bar and a full standard tank holds about 200 bar. Tire pressure and turbocharger boost are often quoted in bar outside the US.

1 bar = 100,000 pascals (exactly).

Sources: Wikipedia: Bar (unit); Wikipedia: Atmospheric pressure

Related conversions

See all pressure units.