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Caliber vs. Calibre: Know the Difference

Shumaila Saeed
By Shumaila Saeed || Updated on December 25, 2023
Caliber refers to the quality of someone's character or the level of someone's ability, or to the diameter of a bullet or bore of a gun. Calibre is the British English spelling of the same word.
Caliber vs. Calibre

Key Differences

Caliber and Calibre essentially have the same meanings. The primary difference lies in their usage in different forms of English. Caliber is the preferred spelling in American English, representing both the quality of a person's character or ability and the diameter of a gun barrel or bullet.
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Shumaila Saeed
Nov 20, 2023
When discussing firearms, both Caliber and Calibre refer to the internal diameter of a gun barrel or the diameter of the projectile it fires. This technical term is universally understood in both American and British English contexts.
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Nov 20, 2023
In a metaphorical sense, Caliber and Calibre are used to describe the quality or degree of excellence of an individual's character or ability. In this context, the words are interchangeable, with the spelling differing primarily by regional preference.
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Shumaila Saeed
Nov 20, 2023
The usage of Caliber in American English and Calibre in British English extends to various industries and disciplines. For instance, in academic and professional contexts, both terms are used to describe the level of quality or capacity of someone or something.
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Shumaila Saeed
Nov 20, 2023
Lastly, it's important to note that while Caliber and Calibre are synonymous, the choice of spelling should align with the form of English being used. This distinction ensures clarity and consistency in written communication.
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Comparison Chart

Spelling

Caliber
Calibre
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Usage in Literature

Common in American texts
Common in British texts
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Pronunciation

Same for both
Same for both
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Context in Firearms

Refers to gun barrel diameter or bullet size
Same as in American English
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Metaphorical Use

Refers to the quality of character or ability
Same as in American English
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Caliber and Calibre Definitions

Caliber

The quality of someone's character or ability.
The caliber of her work is exceptional.
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Nov 20, 2023

Calibre

The diameter of a gun's bore.
The pistol is of a 9mm calibre.
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Nov 20, 2023

Caliber

A degree of mental capacity or moral quality.
He is a man of high caliber.
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Calibre

A measure of the diameter of a bullet.
The ammunition was of a larger calibre.
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Caliber

The diameter of the inside of a round cylinder, such as a tube.
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Oct 19, 2023
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Calibre

The quality of someone's character or ability.
The calibre of his intellect is unmatched.
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Caliber

The diameter of the bore of a firearm, usually expressed either in millimeters, in inches, or as a decimal fraction of an inch
.45 caliber.
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Oct 19, 2023

Calibre

A degree of mental capacity or moral quality.
She is a researcher of high calibre.
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Nov 20, 2023

Caliber

The diameter of a projectile such as a bullet or artillery shell, corresponding to the caliber of the firearm from which it is to be fired.
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Oct 19, 2023

Calibre

A level of capacity or competence.
His calibre in negotiations is well-known.
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Nov 20, 2023

Caliber

Degree of worth; quality
A school of high caliber.
An executive of low caliber.
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Oct 19, 2023

Calibre

Variant of caliber.
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Caliber

Diameter of the bore of a firearm, typically measured between opposite lands.
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Oct 19, 2023

Calibre

A degree or grade of excellence or worth;
The quality of students has risen
An executive of low caliber
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Caliber

The diameter of round or cylindrical body, as of a bullet, a projectile, or a column.
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Calibre

Diameter of a tube or gun barrel
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Caliber

A nominal name for a cartridge type, which may not exactly indicate its true size and may include other measurements such as cartridge length or black powder capacity. Eg 7.62×39 or 38.40.
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Oct 19, 2023

Caliber

Unit of measure used to express the length of the bore of a weapon. The number of calibres is determined by dividing the length of the bore of the weapon, from the breech face of the tube to the muzzle, by the diameter of its bore. A gun tube the bore of which is 40 feet (480 inches) long and 12 inches in diameter is said to be 40 calibers long.
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Caliber

(figuratively) Relative size, importance, magnitude.
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Caliber

(figuratively) Capacity or compass of mind.
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Caliber

(dated) Degree of importance or station in society.
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Caliber

(horology) Movement of a timepiece.
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Caliber

The diameter of the bore, as a cannon or other firearm, or of any tube; or the weight or size of the projectile which a firearm will carry; as, an 8 inch gun, a 12-pounder, a 44 caliber.
The caliber of empty tubes.
A battery composed of three guns of small caliber.
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Caliber

The diameter of round or cylindrical body, as of a bullet or column.
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Caliber

Fig.: Capacity or compass of mind.
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Caliber

A degree or grade of excellence or worth;
The quality of students has risen
An executive of low caliber
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Oct 19, 2023

Caliber

Diameter of a tube or gun barrel
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Oct 19, 2023

Caliber

The diameter of a gun's bore.
The rifle has a .30 caliber bore.
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Nov 20, 2023

Caliber

A measure of the diameter of a bullet.
They used bullets of .22 caliber.
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Caliber

A level of capacity or competence.
Her caliber as a leader is well recognized.
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Nov 20, 2023

Repeatedly Asked Queries

Is Caliber used in American or British English?

Caliber is used in American English.
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Nov 20, 2023

What does Caliber mean in firearms?

It refers to the diameter of a gun barrel or a bullet.
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Nov 20, 2023

Are Caliber and Calibre the same?

Yes, they have the same meanings but different spellings.
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Nov 20, 2023

In sports, is Caliber used metaphorically?

Yes, often to describe the skill level or talent of an athlete.
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Can Caliber refer to mental capacity?

Yes, it can denote mental capacity or moral quality.
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Is Calibre the British spelling?

Yes, Calibre is the British English spelling.
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Can Caliber be used in business contexts?

Yes, often to describe the quality or level of someone's work or ability.
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Nov 20, 2023

Can Caliber be used metaphorically?

Yes, to describe someone's quality or ability.
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Nov 20, 2023

Does Calibre have different meanings in different contexts?

The core meaning remains the same, but the application can vary.
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Nov 20, 2023

Are the pronunciations of Caliber and Calibre different?

No, they are pronounced the same.
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Nov 20, 2023

Is Calibre commonly used in everyday British English?

Yes, particularly when discussing quality or excellence.
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Nov 20, 2023

Can Caliber be used to compare people or objects?

Yes, it's often used in comparisons to indicate relative quality or size.
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Does Calibre appear in historical texts?

Yes, especially in the context of historical firearms or notable figures.
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Can Caliber be used in a negative context?

Yes, to denote poor quality or low level of ability.
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Does the meaning of Calibre change in technical contexts?

No, it maintains its meaning related to diameter in firearms.
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Nov 20, 2023

Is Calibre used in scientific contexts?

Yes, especially in physics and engineering relating to measurements.
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Nov 20, 2023

How is Caliber used in an educational context?

It's used to describe the quality of students, faculty, or education.
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Nov 20, 2023

Is Calibre used in the arts?

Yes, often to describe the quality or impact of artistic work.
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Nov 20, 2023

Can Caliber also refer to a person’s worth?

Yes, it's used to denote the worth or quality of an individual.
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Nov 20, 2023

Does Caliber have synonyms?

Yes, words like quality, level, grade, and standard are similar in meaning.
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Nov 20, 2023

Is Calibre found in British technical literature?

Yes, particularly in military and engineering contexts.
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Nov 20, 2023

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About Author
Shumaila Saeed
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Shumaila Saeed
Shumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.

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