How many decipascals are in 1 bar?

1 bar equals 1,000,000 decipascals, using the exact defined conversion factor rather than an estimate.

How do I convert bar to decipascal?

Multiply the bar value by 1000000. The converter above does this instantly to whatever precision you set.

How do I convert decipascal back to bar?

Use the reverse factor: 1 decipascal equals 0.000001 bars. You can also use the swap control in the converter above to flip the direction instantly.

What is a decipascal?

Decipascal (dPa) is a unit of pressure.

Is the bar to decipascal conversion exact?

Yes. A bar is defined as exactly 100,000 pascals, close to (but distinct from) one standard atmosphere (101,325 Pa). That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.

Bars to Decipascals Converter

Q: What is a bar?

Bar (bar) measures pressure. A bar is defined as exactly 100,000 pascals, close to (but distinct from) one standard atmosphere (101,325 Pa). It is classified as a Non-SI metric unit accepted for use with SI.

About Converting Bars to Decipascals

Bar and Decipascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Bar is most often used for tire pressure specifications outside the us.

Formula

decipascals = bars × 1000000

This factor comes from each unit's defined relationship to the category's base unit: 1 bar equals 100000 base units, and 1 decipascal equals 0.1 base units, so dividing one by the other gives the direct bar-to-decipascal factor of 1000000.

Simple example

1 bar × 1000000 = 1,000,000 dPa

1 bar = 1,000,000 decipascals.

Real-world example

35 bar × 1000000 = 35,000,000 dPa

35 bars = 35,000,000 decipascals.

Conversion table

Bar (bar)	Decipascal (dPa)
1 bar	1,000,000 dPa
5 bar	5,000,000 dPa
10 bar	10,000,000 dPa
25 bar	25,000,000 dPa
50 bar	50,000,000 dPa
100 bar	100,000,000 dPa

Reverse conversion: Decipascal to Bar

1 dPa × 0.000001 = 0.000001 bar

1 decipascal = 0.000001 bars.

bars = decipascals × 0.000001

For a page dedicated to this direction, see Decipascal to Bar.

Understanding the Bar

Bar (bar) measures pressure. A bar is defined as exactly 100,000 pascals, close to (but distinct from) one standard atmosphere (101,325 Pa). It is classified as a Non-SI metric unit accepted for use with SI.

Where it's used: Widely used in Europe and most of the world for tire pressure, weather, and industrial pressure

Uses of the Bar today

Tire pressure specifications outside the US
Meteorology (weather maps commonly use millibars, hPa)
Industrial and hydraulic pressure ratings in metric-system countries

History of the Bar

The bar was proposed by Norwegian meteorologist Vilhelm Bjerknes around 1906 as a convenient round pressure unit close to atmospheric pressure, derived from the CGS unit system (one bar equals one million dynes per square centimeter).

Though not an SI unit, the bar remains in wide practical use, particularly in meteorology (as the millibar, now more often written as the equivalent hectopascal) and in tire and hydraulic pressure specifications across most of the world.

Historical origin. Bar was not the invention of a single named person; it developed through the process described above.

Understanding the Decipascal (dPa)

Decipascal is 0.1 pascal units.

Bar — sources

BIPM SI Brochure — Non-SI units accepted for use with SI — Lists the bar among accepted non-SI pressure units.

Bars to Decipascals Converter — bar to dPa

Pressure Converter