Convert Bar to Pascals (Pa)
1 bar equals 100000 pascals.
Bar to Pascal Converter
How to Convert Bar to Pascal
1 bar = 100000 pascals exact
Pascal = Bar × 100000
Example: 1 bar × 100000 = 100000 Pa
Reverse Conversion
To convert pascals back to bar:
- Remember, 1 pascal equals 1 × 10-5 bar.
- To convert 100000 Pa to bar, multiply
100000 x 1 × 10-5, resulting in1 bar.
exact This conversion factor is exact by international definition.
Bar to pascals Conversion Table
Reference table with common bar to pascals conversions. All values calculated with high precision.
Bar to Pascals Table
1 to 100000
Pascals to Bar Table
100000 to 1 × 1010
Definition of Bar
Bar: A Widely Used Pressure Unit
The bar is a metric unit of pressure defined as exactly 100,000 pascals (100 kPa). While not an SI unit, it is accepted for use with the SI and is widely used in meteorology, engineering, and industry. The bar is particularly convenient because standard atmospheric pressure (1 atm) is approximately equal to 1 bar (actually 1.01325 bar).
Conversions to Other Units of Measurement:
- Pascal (Pa): 1 bar equals exactly 100,000 pascals. This conversion is used when working with SI units. For example, 2 bar equals 200,000 Pa or 200 kPa.
- PSI (Pound per Square Inch): 1 bar equals approximately 14.5038 psi. This is one of the most common conversions in industrial applications. For example, a tire pressure of 2.5 bar equals approximately 36.3 psi.
- Atmosphere (atm): 1 bar equals approximately 0.986923 atm. Standard atmospheric pressure (1 atm) equals 1.01325 bar.
- Kilopascal (kPa): 1 bar equals exactly 100 kPa. This conversion is straightforward and commonly used in engineering. For example, 3.5 bar equals 350 kPa.
- Millibar (mbar): 1 bar equals exactly 1,000 millibar. Millibars are commonly used in meteorology for atmospheric pressure measurements.
The bar is valued for its practical convenience, being close to atmospheric pressure while having a simple relationship with SI units.
- Definition
- Metric pressure unit equal to exactly 100,000 pascals.
- Exact factor
- 1 bar = 100,000 Pa (exact); 1 bar = 10⁵ Pa
- Common equivalents
- 1 bar = 1,000 mbar (exact)
- 1 bar ≈ 14.50377 psi
- 1 bar ≈ 0.986923 atm
- Sources
Definition of Pascal
Pascal: The SI Unit of Pressure
The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square meter (N/m²). Named after the French mathematician and physicist Blaise Pascal, it is used extensively in scientific, engineering, and meteorological applications. The pascal is a relatively small unit, so larger multiples like kilopascal (kPa) and megapascal (MPa) are commonly used in practice.
Conversions to Other Units of Measurement:
- Bar: 1 pascal equals 0.00001 bar (or 1 bar = 100,000 Pa). This conversion is frequently used in industrial applications. For example, standard atmospheric pressure (101,325 Pa) equals approximately 1.01325 bar.
- PSI (Pound per Square Inch): 1 pascal equals approximately 0.000145038 psi. This conversion is essential for interfacing with equipment using imperial measurements. For example, 100,000 Pa equals approximately 14.5 psi.
- Atmosphere (atm): 1 pascal equals approximately 9.8692×10⁻⁶ atm. Standard atmospheric pressure is defined as exactly 101,325 Pa or 1 atm.
- Torr: 1 pascal equals approximately 0.00750062 torr. This conversion is commonly used in vacuum technology. For example, 133.322 Pa equals 1 torr.
- Millibar (mbar): 1 pascal equals 0.01 millibar. This conversion is frequently used in meteorology. For example, standard atmospheric pressure equals 1013.25 mbar.
The pascal is fundamental to pressure measurement, providing a standardized unit for scientific calculations and engineering specifications.
- Definition
- SI derived unit of pressure equal to one newton per square meter (N/m²).
- Exact factor
- 1 Pa = 1 N/m² = 1 kg/(m·s²) (exact)
- Common equivalents
- 1 Pa = 0.00001 bar (exact)
- 1 Pa = 0.01 mbar (exact)
- 1 Pa ≈ 0.000145038 psi
- Sources
About the Bar
Facts & Uses
- 1 bar = 100,000 Pa = 100 kPa exactly. Defined in 1909 by Vilhelm Bjerknes as a convenient meteorological unit close to atmospheric pressure.
- Standard for tire pressure in many European countries (~2.0-2.5 bar for cars), compressed air systems, and water pressure.
- Common in diving (1 bar per 10 m of seawater depth), brewing (espresso extraction at 9 bar), and scuba tanks (200-300 bar fill pressure).
- Weather use: millibars (mbar) = 1/1000 bar = hectopascals (hPa). 1013 mbar = standard sea level pressure.
Curiosities
- The bar is not part of the SI, but is accepted for use with the SI system because of its convenient scale and historical adoption in meteorology.
- The name comes from the Greek "baros" (βάρος) meaning "weight" — also the root of "barometer" and "barometric pressure".
- Atmospheric pressure varies from a record low of 870 mbar (Typhoon Tip, 1979) to a record high of 1085 mbar (Mongolia, 2001).
- Approximate equivalents: 1 bar = 14.504 psi = 0.987 atm = 750 mmHg.
Sources
About the Pascal
Facts & Uses
- SI derived unit of pressure: 1 Pa = 1 N/m². Named after Blaise Pascal (1623-1662), the French mathematician and physicist.
- Universal in scientific publications, weather data (hectopascals on barometric charts), and engineering specifications.
- The pascal is a very small unit for everyday pressures — atmospheric pressure is ~101,325 Pa, so weather forecasts use hectopascals (hPa) or kilopascals (kPa).
- Used in fluid mechanics, vacuum measurements, materials science (stress and strain), and tire pressure in metric markets.
Curiosities
- The pascal was adopted as the SI unit of pressure at the 14th CGPM in 1971, replacing the older mechanical units like dyne/cm² (CGS) and lbf/in² (imperial).
- 1 Pa is roughly the pressure exerted by a thin layer of paper resting on a tabletop — about 0.0000099 atmospheres.
- The millibar (mbar), traditionally used in meteorology, equals exactly 1 hPa (100 Pa). Most modern weather services have switched to hPa for SI compatibility.
- Approximate equivalents: 1 Pa ≈ 0.000145 psi; 1 atm = 101,325 Pa = 1013.25 hPa = 14.696 psi.
Sources
Frequently Asked Questions
How many pascals are in one bar?
One bar equals 100000 pascals. To convert, multiply the bar value by 100000. For the reverse, divide the pascal value by 100000 (or multiply by 1 × 10-5).
What is 0.18 bar in pascals?
0.18 bar = 18000 pascals. This is one of the most commonly searched conversions for this pair.
How precise is the bar-to-pascal conversion?
The factor 100000 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert Pascal to Bar
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