Bar to Pa Converter — Free Australian Pressure Tool

Convert bar to Pa as you type.

Pressure Converter - Convert kPa, PSI, Bar & More Instantly

1 bar = 100000 Pa

Reference for one unit; displayed values may be rounded.

Enter Bar

bar

Bar

Use a dot or comma for decimals, without thousands separators.

Result in Pascal

Pascal

Decimal places

Display rounding does not improve the accuracy of your original measurement. Very large or very small results use scientific notation.

Method and source

Changing units does not change gauge pressure into absolute pressure or set a safe operating pressure.

NIST SP 811

bar → pa — Worked examples

Choose an example to fill the tool. Results use the displayed formula and are rounded for display.

Bar to Pascal Conversion Formula

To convert bar to pascals, multiply the bar value by 100000. The bar is defined as exactly 100,000 pascals, making this one of the cleanest pressure conversions in the metric system.

1 bar = 100000 Pa

Bar and Pascal Explained

Bar (bar)

The bar is a metric pressure unit defined as exactly 100,000 pascals — a round power of ten that sits just 1.3 per cent below the standard atmosphere. That deliberate sizing made it the gauge language of imported and European machinery: dive cylinders are filled to 200-232 bar, espresso machines pull 9 bar, mining excavators run 250-350 bar circuits, and water-jetting rigs reach 700 bar. Its clean decimal definition means every bar value maps to pascals, kilopascals, or megapascals by simply shifting the decimal point.

Where it is used: Bar appears on dive gauges at every dive shop from Cairns to Perth, on the tyre placards of imported European cars, on compressor gauges and machinery nameplates — and the global diving industry rates cylinders in bar.

Origin: British meteorologist William Napier Shaw proposed the bar in 1909 as a near-atmosphere unit of convenient size, deriving the name from the Greek baros, meaning weight.

Pascal (Pa)

The pascal (Pa) is the SI derived unit of pressure, defined as one newton of force acting on one square metre. Everyday machinery pressures produce large pascal figures — a 9 bar espresso pump generates 900,000 Pa and a 250 bar excavator circuit 25,000,000 Pa — which is why practice favours its kilopascal and megapascal multiples. Reporting in base pascals remains the canonical SI form, keeping pressure dimensionally consistent with newtons, joules, and metres throughout engineering computation.

Where it is used: Pascals are the required unit in scientific publishing, Standards Australia certification files, laboratory instrumentation, and any documentation headed for regulatory review.

Origin: Named for Blaise Pascal, whose 17th-century experiments tied atmospheric pressure to altitude, the unit became the official SI pressure measure in 1971.

Bar to Pascal Conversion Table

Select a value to use it in the calculator.

Bar (bar)	Pascal (Pa)
	10000 Pa
	20000 Pa
	50000 Pa
	100000 Pa
	150000 Pa
	200000 Pa
	250000 Pa
	300000 Pa
	400000 Pa
	500000 Pa
	630000 Pa
	700000 Pa
	800000 Pa
	1.000000e+6 Pa
	1.500000e+6 Pa
	2.000000e+6 Pa
	3.000000e+6 Pa
	5.000000e+6 Pa
	1.000000e+7 Pa

Pascal to Bar Conversion Table

Pascal (Pa)	Bar (bar)
1000 Pa	0.01 bar
5000 Pa	0.05 bar
10000 Pa	0.1 bar
20000 Pa	0.2 bar
50000 Pa	0.5 bar
100000 Pa	1 bar
101325 Pa	1.01325 bar
200000 Pa	2 bar
350000 Pa	3.5 bar
500000 Pa	5 bar
1.000000e+6 Pa	10 bar
5.000000e+6 Pa	50 bar
1.000000e+7 Pa	100 bar

Bar to Pascal in Everyday Objects

Common real-world examples that make Bar and Pascal easy to picture at a glance.

	Bar (bar)	Pascal (Pa)
A natural gas main in a Sydney suburb	3 bar	300000 Pa
A workshop filter-regulator in a Brisbane trade shop	6.3 bar	630000 Pa
A hydraulic circuit tested at a Qantas maintenance hangar	207 bar	2.070000e+7 Pa
A keg carbonation setting for a home-brewed lager	2.5 bar	250000 Pa
A membrane stage at the Sydney desalination plant	60 bar	6.000000e+6 Pa
A hydrostatic test bench certifying dive tanks before a reef trip	400 bar	4.000000e+7 Pa

When You Need Bar to Pascal Conversions

SI Lab Documentation

A materials test rig at a Melbourne lab reports 232 bar on its certificate; the journal submission requires SI, so record 23,200,000 Pa (23.2 MPa) in the methods section.

Espresso Pump Engineering

A rotary pump holds 9 bar during extraction — 900,000 Pa — the figure the machine's engineering drawing tolerances as 0.9 MPa, and the standard every Melbourne barista relies on.

Pneumatic Circuit Classes

A filter-regulator set to 6 bar feeds the air tools in a Brisbane workshop at 600,000 Pa, matching the 0.6 MPa rating printed on the imported equipment datasheet.

Hydronic Heating Commissioning

A hydronic heating loop charged to 1.5 bar before a Canberra winter is certified as 150,000 Pa (150 kPa) on the start-up sheet for the SI-based inspection file.

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How to Use

1

Enter Bar Value

Type the bar reading — typical entries include tyre pressures (2-2.5 bar), café espresso machines (9 bar), and Pilbara mining hydraulics (250-350 bar)
2

View Pascal Result

The pascal equivalent appears instantly. For example, 2.3 bar converts to 230,000 Pa
3

Copy or Swap

Copy the result or click Swap to convert pascals back to bar
4

Express in SI Prefixes

Reports and AS/NZS paperwork prefer prefixed units: divide by 1,000 for kilopascals or 1,000,000 for megapascals, so 250 bar = 25,000,000 Pa = 25 MPa

Why Use Be Converter?

Instant Conversion

Get precise bar to Pa results in real-time as you type — perfect for translating imported machinery specs into SI units for Australian compliance paperwork

Exact Definition

Uses the definitional factor of exactly 100,000 Pa per bar with zero rounding — 1.01325 bar converts to 101,325 Pa, one standard atmosphere

Conversion Table

Quick reference with common values like 2.3 bar (230,000 Pa), 9 bar (900,000 Pa), and 232 bar (23,200,000 Pa) — the classic full dive tank fill

Bidirectional

Easily swap between bar and pascals with one click for reverse conversions

Free & No Signup

No registration required. Unlimited conversions. Completely free forever

Privacy First

All calculations happen in your browser. No data is sent to any server

Frequently Asked Questions

How many pascals is 1 bar?

Exactly 100,000 Pa. Because the definition is a round power of ten, 2 bar = 200,000 Pa and 0.5 bar = 50,000 Pa follow instantly. A typical Australian tyre placard pressure of 220 kPa is simply 2.2 bar.

What is 2.5 bar in Pa?

2.5 bar × 100000 = 250,000 Pa. In SI-prefixed form that is 250 kPa or 0.25 MPa — the rating class of plenty of workshop pneumatic circuits and farm irrigation setups.

Is bar an SI unit?

No. The pascal — one newton per square metre — is the SI unit, while the bar is a legacy metric unit accepted for use alongside SI because it approximates one atmosphere so conveniently (1.01325 bar = 101,325 Pa). When Standards Australia paperwork asks for SI, pascals are the answer.

How do I convert hydraulic pressures from bar to Pa?

Multiply by 100,000. A 250 bar excavator circuit on a Pilbara mine site works at 25,000,000 Pa (25 MPa), a tradie's 180 bar water blaster runs at 18,000,000 Pa (18 MPa), and a 700 bar water-jetting rig reaches 70,000,000 Pa (70 MPa).

Is 1 bar the same as 1 atmosphere?

Close but not equal: 1 atm = 101,325 Pa = 1.01325 bar. The bar is about 1.3 per cent smaller than the standard atmosphere, which is why the Bureau of Meteorology reports pressure in exact hectopascals while industry kept bar for machinery ratings.

How many pascals is 10 bar?

10 bar equals 1,000,000 Pa — exactly 1 MPa. That tidy equivalence is why pressure pipe classes step in tens: PN10 means 1.0 MPa and PN16 means 1.6 MPa, ratings you'll spot on water mains all over Australia.

How do I convert bar to MPa?

Divide the pascal result by one million, or simply divide bar by 10: 250 bar = 25 MPa, and the 9 bar pump in a Melbourne espresso machine is 0.9 MPa.

What is 0.5 bar in pascals?

0.5 bar × 100000 = 50,000 Pa — typical of pool filter gauges and low-pressure gas lines — usually written 50 kPa on the dial.

About Bar to Pascal Converter

Our free online bar to pascal converter turns imported machinery ratings into the SI unit that Standards Australia documents, universities and certification bodies expect. Whether you're logging a dive tank fill at 232 bar before a Great Barrier Reef trip, recording the 9 bar pump of an espresso machine for a Melbourne café fit-out, commissioning a hydronic heating loop in Canberra, or filing a pressure-vessel inspection in the Pilbara, this tool returns the exact value with no rounding drift. The bar — exactly 100,000 pascals — remains the working unit on gauges and nameplates on imported gear, while the pascal anchors SI computation. Because the factor is a clean power of ten, results stay exact at any magnitude.

Expert Tips for Bar to Pascal Conversion

The conversion is a pure power-of-ten shift: append five zeros to a bar value. 1.5 bar = 150,000 Pa, 9 bar = 900,000 Pa, 180 bar = 18,000,000 Pa

For journals and reports, convert onward to MPa by dividing bar by 10 — a 250 bar excavator circuit is 25 MPa, and a 60 bar reverse-osmosis stage at the Sydney desalination plant is 6 MPa

Espresso engineering holds extraction at 9 bar = 900,000 Pa; a Melbourne café fit-out drawing often tolerances it as 0.9 MPa ± 0.1

Hydronic heating and pressure-limited systems: 1.5 bar = 150 kPa fill pressure on a Canberra heating loop and 3 bar = 300,000 Pa relief settings — the numbers plumbers and inspectors expect on commissioning sheets

Cross-check with atmosphere when a spec mixes units: 232 bar (a full scuba tank before a Great Barrier Reef dive) is 23,200,000 Pa or about 229 atm — the bar and atm differ by only 1.3 per cent

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