# Bar vs. Barg — What's the Difference?

By Tayyaba Rehman & Fiza Rafique — Published on February 10, 2024
Bar is a unit of pressure equal to 100,000 Pascals, while Barg is similar but adjusted to account for atmospheric pressure, essentially Bar gauge.

## Key Differences

Bar is a metric unit of pressure, defined as exactly 100,000 Pascals. It is widely used in various scientific and engineering contexts to measure pressure. Barg, on the other hand, stands for Bar gauge. It is used to measure pressure relative to atmospheric pressure, rather than absolute pressure.
Barg is adjusted to atmospheric conditions, meaning 0 Barg equals the atmospheric pressure at sea level, approximately 1.01325 Bar. In contrast, Bar is an absolute measurement and does not take atmospheric pressure into account. This makes Bar suitable for applications where absolute pressure is required, like in meteorology.
When measuring pressure in systems like air compressors or hydraulic systems, Barg is often more useful as it provides a reading relative to the environment. However, Bar is more appropriate for enclosed systems where external atmospheric conditions are not a factor, such as in sealed scientific experiments.
Bar is a non-SI unit but is accepted for use with the SI system, commonly used in Europe and parts of Asia. Barg, being a derivative of Bar, is also non-SI but widely used in engineering, particularly when dealing with pressures near Earth's surface.
In practical applications, the choice between Bar and Barg depends on the context of the pressure measurement. Bar is preferred for absolute pressure readings, while Barg is more relevant for everyday applications where pressure is measured relative to the atmosphere.

## Comparison Chart

### Definition

A unit of pressure equal to 100,000 Pascals
Bar adjusted for atmospheric pressure; Bar gauge

### Measurement Type

Absolute pressure
Gauge pressure, relative to atmospheric pressure

### Usage Context

Used where absolute pressure is needed
Used for pressure relative to atmospheric conditions

### Atmospheric Pressure

Does not consider atmospheric pressure
Zero Barg is equal to atmospheric pressure at sea level

### Common Applications

Meteorology, scientific research
Engineering, applications near Earth's surface

## Compare with Definitions

#### Bar

A metric unit used for measuring atmospheric pressure.
Weather forecasts often report atmospheric pressure in Bars.

#### Barg

Common in engineering and industrial applications.
Hydraulic systems are often rated in Barg for efficiency.

#### Bar

A non-SI unit accepted for use with the SI.
Scientists commonly use the Bar for various pressure-related experiments.

#### Barg

Bar gauge, measuring pressure relative to atmospheric pressure.
The compressor's output was 6 Barg.

#### Bar

Commonly used in Europe for pressure measurement.
European car tires are typically inflated to 2.5 Bars.

#### Barg

Used where pressure is measured against atmospheric pressure.
The pool's filtration system operates at 1.5 Barg.

#### Bar

Represents absolute pressure.
The Bar is crucial in calculating the absolute pressure in sealed systems.

#### Barg

Zero Barg equals the atmospheric pressure at sea level.
The gauge showing 0 Barg indicates normal atmospheric pressure.

#### Bar

A relatively long, straight, rigid piece of solid material used as a fastener, support, barrier, or structural or mechanical member.

#### Barg

Practical for everyday applications.
Air pressure in tires is typically measured in Barg for accuracy.

#### Bar

A solid oblong block of a substance or combination of ingredients, such as soap or candy.

#### Bar

A usually rectangular slice of any of various flat baked confections that are typically dense in texture.

#### Bar

A rectangular block of a precious metal.

#### Bar

See horizontal bar.

#### Bar

A horizontal rod that marks the height to be cleared in high jumping or pole vaulting.

#### Bar

A standard, expectation, or degree of requirement
A leader whose example set a high bar for others.

#### Bar

Something that impedes or prevents action or progress
A poor education was a bar to his ambitions.

#### Bar

A ridge, as of sand or gravel, on a shore or streambed, that is formed by the action of tides or currents.

#### Bar

A narrow marking, as a stripe or band.

#### Bar

A narrow metal or embroidered strip worn on a military uniform indicating rank or service.

#### Bar

Chiefly British A small insignia worn on a military decoration indicating that it has been awarded an additional time.

#### Bar

(Heraldry) A pair of horizontal parallel lines drawn across a shield.

#### Bar

The nullification, defeat, or prevention of a claim or action.

#### Bar

The process by which nullification, defeat, or prevention is achieved.

#### Bar

The railing in a courtroom separating the participants in a legal proceeding from the spectators.

#### Bar

A court or courtroom.

#### Bar

Attorneys considered as a group. Used with the.

#### Bar

The profession of law. Used with the.

#### Bar

A vertical line drawn through a staff to mark off a measure.

A measure.

#### Bar

Variant of barre.

#### Bar

A counter at which drinks, especially alcoholic drinks, and sometimes food, are served.

#### Bar

An establishment or room having such a counter.

#### Bar

A unit of pressure equal to one million (106) dynes per square centimeter.

#### Bar

To fasten securely with a long, straight, rigid piece of material
Barred the gate.

#### Bar

To shut in or confine
Barred themselves in the basement.

#### Bar

To obstruct or impede; block
Barred the access route.

#### Bar

To keep out; exclude
Tourists are barred from this room.

#### Bar

To prohibit or prevent (someone) from doing something
Failing the eye exam barred him from driving.

#### Bar

To prohibit (an action)
The state bars the dumping of waste in the river.

#### Bar

(Law) To nullify, defeat, or prevent (a claim or action).

#### Bar

To rule out; except
Can we bar the possibility of foul play?.

#### Bar

To mark with stripes or bands.

#### Bar

Chiefly British Except for; excluding
This was your best performance, bar none.

#### Bar

A solid, more or less rigid object of metal or wood with a uniform cross-section smaller than its length.
The window was protected by steel bars.

#### Bar

A solid metal object with uniform (round, square, hexagonal, octagonal or rectangular) cross-section; in the US its smallest dimension is 4 inch or greater, a piece of thinner material being called a strip.
Ancient Sparta used iron bars instead of handy coins in more valuable alloy, to physically discourage the use of money.
We are expecting a carload of bar tomorrow.

#### Bar

A cuboid piece of any solid commodity.
Bar of chocolate
Bar of soap

#### Bar

A broad shaft, band, or stripe.
A bar of light
A bar of colour

#### Bar

A long, narrow drawn or printed rectangle, cuboid or cylinder, especially as used in a bar code or a bar chart.

#### Bar

(typography) Any of various lines used as punctuation or diacritics, such as the pipe ⟨{{!}}⟩, fraction bar (as in 12), and strikethrough (as in Ⱥ), formerly including oblique marks such as the slash.

#### Bar

(mathematics) The sign indicating that the characteristic of a logarithm is negative, conventionally placed above the digit(s) to show that it applies to the characteristic only and not to the mantissa.

#### Bar

(physics) A similar sign indicating that the charge on a particle is the negative of its usual value (and that consequently the particle is in fact an antiparticle).

#### Bar

A business selling alcoholic drinks for consumption on the premises, or the premises themselves; a public house.
The street was lined with all-night bars.

#### Bar

The counter of such premises.
Step up to the bar and order a drink.

#### Bar

A counter, or simply a cabinet, from which alcoholic drinks are served in a private house or a hotel room.

#### Bar

, juice bar, etc.}} Premises or a counter serving any type of beverage.

#### Bar

An establishment where alcohol and sometimes other refreshments are served.

#### Bar

An informal establishment selling food to be consumed on the premises.
A burger bar
A local fish bar

#### Bar

An establishment offering cosmetic services.
A nail bar; a brow bar

#### Bar

An official order or pronouncement that prohibits some activity.
The club has lifted its bar on women members.

#### Bar

Anything that obstructs, hinders, or prevents; an obstruction; a barrier.

#### Bar

A metasyntactic variable representing an unspecified entity, often the second in a series, following foo.
Suppose we have four objects, foo, bar, baz and quux.

#### Bar

A dividing line (physical or notional) in the chamber of a legislature beyond which only members and officials may pass.

#### Bar

The railing surrounding the part of a courtroom in which the judges, lawyers, defendants and witnesses stay.

#### Bar

The bar exam, the legal licensing exam.
He's studying hard to pass the Bar this time; he's failed it twice before.

#### Bar

Collectively, lawyers or the legal profession; specifically applied to barristers in some countries, but including all lawyers in others.
He was called to the bar, he became a barrister.

#### Bar

One of an array of bar-shaped symbols that display the level of something, such as wireless signal strength or battery life remaining.
I don't have any bars in the middle of this desert.

#### Bar

(music) A vertical line across a musical staff dividing written music into sections, typically of equal durational value.

#### Bar

(music) One of those musical sections.

#### Bar

(sports) A horizontal pole that must be crossed in the high jump and pole vault.

#### Bar

(metaphorical) Any level of achievement regarded as a challenge to be overcome.

The crossbar.

#### Bar

(backgammon) The central divider between the inner and outer table of a backgammon board, where stones are placed if they are hit.

#### Bar

An addition to a military medal, on account of a subsequent act.

#### Bar

A linear shoaling landform feature within a body of water.

#### Bar

A ridge or succession of ridges of sand or other substance, especially a formation extending across the mouth of a river or harbor or off a beach, and which may obstruct navigation. (FM 55-501).

#### Bar

(heraldry) One of the ordinaries in heraldry; a diminutive of a fess.

#### Bar

A city gate, in some British place names.

#### Bar

(mining) A drilling or tamping rod.

#### Bar

(mining) A vein or dike crossing a lode.

#### Bar

(architecture) A gatehouse of a castle or fortified town.

#### Bar

(farriery) The part of the crust of a horse's hoof which is bent inwards towards the frog at the heel on each side, and extends into the centre of the sole.

#### Bar

The space between the tusks and grinders in the upper jaw of a horse, in which the bit is placed.

#### Bar

(slang) A measure of drugs, typically one ounce.

#### Bar

A non-SI unit of pressure equal to 100,000 pascals, approximately equal to atmospheric pressure at sea level.

#### Bar

(transitive) To obstruct the passage of (someone or something).
Our way was barred by a huge rockfall.

#### Bar

(transitive) To prohibit.
I couldn't get into the nightclub because I had been barred.

#### Bar

(transitive) To lock or bolt with a bar.
Bar the door

#### Bar

To imprint or paint with bars, to stripe.

#### Bar

Except, other than, besides.
He invited everyone to his wedding bar his ex-wife.

#### Bar

(horse racing) Denotes the minimum odds offered on other horses not mentioned by name.
Leg At Each Corner is at 3/1, Lost My Shirt 5/1, and it's 10/1 bar.

#### Bar

A piece of wood, metal, or other material, long in proportion to its breadth or thickness, used as a lever and for various other purposes, but especially for a hindrance, obstruction, or fastening; as, the bars of a fence or gate; the bar of a door.
Thou shalt make bars of shittim wood.

#### Bar

An indefinite quantity of some substance, so shaped as to be long in proportion to its breadth and thickness; as, a bar of gold or of lead; a bar of soap.

#### Bar

Anything which obstructs, hinders, or prevents; an obstruction; a barrier.
Must I new bars to my own joy create?

#### Bar

A bank of sand, gravel, or other matter, esp. at the mouth of a river or harbor, obstructing navigation.

#### Bar

Any railing that divides a room, or office, or hall of assembly, in order to reserve a space for those having special privileges; as, the bar of the House of Commons.

#### Bar

The railing that incloses the place which counsel occupy in courts of justice. Hence, the phrase at the bar of the court signifies in open court.

#### Bar

Any tribunal; as, the bar of public opinion; the bar of God.

#### Bar

A barrier or counter, over which liquors and food are passed to customers; hence, the portion of the room behind the counter where liquors for sale are kept.

#### Bar

An ordinary, like a fess but narrower, occupying only one fifth part of the field.

#### Bar

A broad shaft, or band, or stripe; as, a bar of light; a bar of color.

#### Bar

A vertical line across the staff. Bars divide the staff into spaces which represent measures, and are themselves called measures.

#### Bar

The space between the tusks and grinders in the upper jaw of a horse, in which the bit is placed.

#### Bar

A drilling or tamping rod.

#### Bar

A gatehouse of a castle or fortified town.

#### Bar

To fasten with a bar; as, to bar a door or gate.

#### Bar

To restrict or confine, as if by a bar; to hinder; to obstruct; to prevent; to prohibit; as, to bar the entrance of evil; distance bars our intercourse; the statute bars my right; the right is barred by time; a release bars the plaintiff's recovery; - sometimes with up.
He barely looked the idea in the face, and hastened to bar it in its dungeon.

#### Bar

To except; to exclude by exception.
Nay, but I bar to-night: you shall not gauge meBy what we do to-night.

#### Bar

To cross with one or more stripes or lines.
For the sake of distinguishing the feet more clearly, I have barred them singly.

#### Bar

A room or establishment where alcoholic drinks are served over a counter;
He drowned his sorrows in whiskey at the bar

#### Bar

A counter where you can obtain food or drink;
He bought a hot dog and a coke at the bar

#### Bar

A rigid piece of metal or wood; usually used as a fastening or obstruction or weapon;
There were bars in the windows to prevent escape

#### Bar

Musical notation for a repeating pattern of musical beats;
The orchestra omitted the last twelve bars of the song

#### Bar

An obstruction (usually metal) placed at the top of a goal;
It was an excellent kick but the ball hit the bar

#### Bar

The act of preventing;
There was no bar against leaving
Money was allocated to study the cause and prevention of influenza

#### Bar

(meteorology) a unit of pressure equal to a million dynes per square centimeter;
Unfortunately some writers have used bar for one dyne per square centimeter

#### Bar

A submerged (or partly submerged) ridge in a river or along a shore;
The boat ran aground on a submerged bar in the river

#### Bar

The body of individuals qualified to practice law in a particular jurisdiction;
He was admitted to the bar in New Jersey

#### Bar

A block of solid substance (such as soap or wax);
A bar of chocolate

#### Bar

A portable .30 caliber magazine-fed automatic rifle operated by gas pressure; used by United States troops in World War I and in World War II and in the Korean War

#### Bar

A horizontal rod that serves as a support for gymnasts as they perform exercises

#### Bar

A heating element in an electric fire;
An electric fire with three bars

#### Bar

(law) a railing that encloses the part of the courtroom where the judges and lawyers sit and the case is tried;
Spectators were not allowed past the bar

#### Bar

Prevent from entering; keep out;
He was barred from membership in the club

#### Bar

Render unsuitable for passage;
Block the way

#### Bar

Expel, as if by official decree;
He was banished from his own country

#### Bar

Secure with, or as if with, bars;
He barred the door

#### Bar

A unit of pressure equal to 100,000 Pascals.
The pressure inside the tank was measured at 2 Bars.

## Common Curiosities

#### What is Bar in terms of pressure measurement?

Bar is a unit of pressure, equal to 100,000 Pascals.

#### What does 0 Barg indicate?

0 Barg indicates the atmospheric pressure at sea level.

#### When is Barg used?

Barg is used in applications where pressure is measured against atmospheric conditions.

#### How are Bar and Barg values converted?

Barg can be converted to Bar by adding atmospheric pressure to the Barg value.

#### Is Bar an SI unit?

No, Bar is a non-SI unit but is accepted for use with the SI.

#### Is Bar suitable for measuring tire pressure?

Bar can be used, but Barg is more practical for measuring tire pressure relative to atmospheric conditions.

#### What does Barg stand for?

Barg stands for Bar gauge, which is Bar adjusted for atmospheric pressure.

#### How does Bar differ from Barg in measurement type?

Bar measures absolute pressure, while Barg measures gauge pressure relative to atmospheric pressure.

#### Why is Bar important in meteorology?

Bar is used in meteorology for measuring absolute atmospheric pressure.

#### Are Bar and Barg interchangeable?

They are not interchangeable but can be converted based on context.

#### Is Barg commonly used in engineering?

Yes, Barg is widely used in engineering and industrial contexts.

#### Where is Bar commonly used?

Bar is commonly used in Europe and in scientific research globally.

#### Can Bar and Barg values be the same?

Yes, but only when atmospheric pressure is factored out in Barg.

#### Does Barg consider atmospheric pressure?

Yes, Barg is adjusted to account for atmospheric pressure.

#### Why choose Barg over Bar in everyday applications?

Barg is more relevant for everyday applications as it provides a reading relative to the surrounding atmosphere.

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## Author Spotlight

Written by
Tayyaba Rehman
Tayyaba Rehman is a distinguished writer, currently serving as a primary contributor to askdifference.com. As a researcher in semantics and etymology, Tayyaba's passion for the complexity of languages and their distinctions has found a perfect home on the platform. Tayyaba delves into the intricacies of language, distinguishing between commonly confused words and phrases, thereby providing clarity for readers worldwide.
Co-written by
Fiza Rafique
Fiza Rafique is a skilled content writer at AskDifference.com, where she meticulously refines and enhances written pieces. Drawing from her vast editorial expertise, Fiza ensures clarity, accuracy, and precision in every article. Passionate about language, she continually seeks to elevate the quality of content for readers worldwide.