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Convert Bar to Pascals

Instantly convert Bar (bar) to Pascals (Pa) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: bar to Pamultiply by 100000

Reference Table

Bar (bar)Pascals (Pa)
1100000
5500000
101000000
252500000
505000000
10010000000

How to Convert Bar to Pascals

Formula

To convert Bar (bar) to Pascals (Pa): multiply by 100000

Step-by-Step

  1. Start with your value in Bar (bar).
  2. Multiply by 100000 to perform the conversion.
  3. The result is your value expressed in Pascals (Pa).

Conversion Factor

1 bar = 100000 Pa

Reverse Factor

1 Pa = 0.00001 bar

Worked Example

Convert 25 Bar to Pascals: 25 bar = 2500000 Pa

About Bar (bar)

A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately the average sea-level atmospheric pressure on Earth (1 atm = 1.01325 bar). Defined by IUPAC and accepted for use with the SI by the BIPM, the bar is not itself an SI-proper unit but is universally recognized in engineering. Bars are the default unit in European industry for compressed gas systems (compressed air at 6-10 bar shop pressure), hydraulics (mobile equipment at 200-400 bar working pressure), and chemical process plants. Car tire pressures in much of the world outside the US are specified in bar (a typical passenger car runs ~2.2 bar / 32 psi cold). Gauges on scuba cylinders (200 bar fill / ~2900 psi), brewery CO₂ tanks, fire suppression systems, and espresso machines (9 bar extraction pressure) all read in bar. 1 bar = 14.504 psi = 100 kPa = 0.9869 atm.

About Pascal (Pa)

The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. Named for 17th-century French mathematician Blaise Pascal, whose 1647-48 Puy-de-Dôme experiment established that atmospheric pressure decreases with altitude. The pascal is a small unit — standard sea-level atmospheric pressure is exactly 101,325 Pa per the BIPM SI Brochure — so working engineering and meteorology use multiples: kilopascals (kPa) for everyday gauge pressures, megapascals (MPa) for material strength, hectopascals (hPa) for barometric readings (1 kPa = 10 hPa). The pascal is the universal SI reference for pressure across scientific publication (Physical Review, J. Fluid Mechanics), thermodynamic state tables (NIST REFPROP), and international engineering codes (ASME, EN, JIS). Converting Pa to psi is a divide-by-6894.76; Pa to bar is divide-by-100,000.

Quick Facts

  • 1 Bar equals 100000 Pascals
  • 1 Pascal equals 0.00001 Bar
  • Bar is a unit of pressure
  • Pascal is a unit of pressure
  • This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
  • The Bar belongs to the metric system

Common Bar to Pascal Conversions

Bar (bar)Pascals (Pa)
0.110000
0.550000
1100000
2200000
5500000
101000000
14.6961469600
151500000
202000000
252500000
505000000
10010000000
15015000000
20020000000
50050000000
1000100000000

Understanding Bar

The Bar (symbol: bar) is a unit of pressure. A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately the average sea-level atmospheric pressure on Earth (1 atm = 1.01325 bar). Defined by IUPAC and accepted for use with the SI by the BIPM, the bar is not itself an SI-proper unit but is universally recognized in engineering. Bars are the default unit in European industry for compressed gas systems (compressed air at 6-10 bar shop pressure), hydraulics (mobile equipment at 200-400 bar working pressure), and chemical process plants. Car tire pressures in much of the world outside the US are specified in bar (a typical passenger car runs ~2.2 bar / 32 psi cold). Gauges on scuba cylinders (200 bar fill / ~2900 psi), brewery CO₂ tanks, fire suppression systems, and espresso machines (9 bar extraction pressure) all read in bar. 1 bar = 14.504 psi = 100 kPa = 0.9869 atm.

It belongs to the metric measurement system.

Bar are commonly used in tire inflation, weather reporting, scuba diving, and engineering.

Understanding Pascals

The Pascal (symbol: Pa) is a unit of pressure. The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. Named for 17th-century French mathematician Blaise Pascal, whose 1647-48 Puy-de-Dôme experiment established that atmospheric pressure decreases with altitude. The pascal is a small unit — standard sea-level atmospheric pressure is exactly 101,325 Pa per the BIPM SI Brochure — so working engineering and meteorology use multiples: kilopascals (kPa) for everyday gauge pressures, megapascals (MPa) for material strength, hectopascals (hPa) for barometric readings (1 kPa = 10 hPa). The pascal is the universal SI reference for pressure across scientific publication (Physical Review, J. Fluid Mechanics), thermodynamic state tables (NIST REFPROP), and international engineering codes (ASME, EN, JIS). Converting Pa to psi is a divide-by-6894.76; Pa to bar is divide-by-100,000.

It belongs to the metric measurement system.

Pascals are commonly used in tire inflation, weather reporting, scuba diving, and engineering.

Why Convert Bar to Pascals?

Engineers, mechanics, and scientists frequently need to convert pressure between Bar and Pascals when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.

Frequently Asked Questions

How do I convert Bar to Pascals?

A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately the average sea-level atmospheric pressure on Earth (1 atm = 1. To convert Bar to Pascals, multiply by 100000. For example, 25 bar equals 2500000 Pa.

How many Pascals are in 1 Bar?

There are 100000 Pascals in 1 Bar.

How many Bar are in 1 Pascal?

There are 0.00001 Bar in 1 Pascal.

What is the formula for Bar to Pascal conversion?

The formula is: multiply by 100000. This means 1 bar = 100000 Pa.

Is a Bar bigger than a Pascal?

No. One Bar is smaller than one Pascal because 1 bar equals 100000 Pa, which is greater than 1.

When do you need to convert between Bar and Pascals?

The SI derived unit of pressure (and stress), formally defined as one newton per square meter (N/m²) by ISO 80000-4. Bar and Pascal are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.

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