Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
18th century
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "18th century" is correct and usable in written English.
You can use it when referring to the time period that lasted from January 1st, 1701 to December 31st, 1800. For example: "The 18th century saw many changes to the political landscape."
✓ Grammatically correct
News & Media
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
30 human-written examples
You had better believe it: an 18th century opera, in 18th century clothes, behaving the way 18th century opera used to behave.
News & Media
First came Uranus in the 18th century.
News & Media
Between Aristotle and the late 18th century?
News & Media
Fast-forward to the 18th century.
News & Media
In the 18th century performers often improvised.
News & Media
In the 18th century, Capt.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
30 human-written examples
Why Paris in the mid-18th century?
News & Media
Bloomsbury has grand 18th-century mansions.
News & Media
(Hammon was another black 18th-century poet).
News & Media
The 18th-century man is intact.
News & Media
(So thought the 18th-century Deists).
Encyclopedias
Expert writing Tips
Best practice
When writing about specific events within the "18th century", provide context by referencing specific years or periods (early, mid, late) to enhance clarity.
Common error
Avoid using "18th century" when referring to a specific decade within the 1700s. For example, if discussing events in the 1750s, specify "the 1750s" rather than the "18th century" for increased precision.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "18th century" functions as a noun phrase, specifically a temporal noun phrase, indicating a period of time. It is used to specify when events occurred, styles were prevalent, or people lived, as seen in Ludwig's examples.
Frequent in
News & Media
62%
Science
12%
Encyclopedias
6%
Less common in
Formal & Business
0%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "18th century" is a common and grammatically correct way to refer to the period from 1701 to 1800. Ludwig AI confirms its validity and provides numerous examples across diverse contexts, primarily in news media and scientific publications. Related phrases include "eighteenth century", "the 1700s", and more descriptive terms like "the Age of Enlightenment". When using the phrase, provide specific details to avoid ambiguity, and remember to use the definite article "the". The usage is generally neutral, allowing for versatile application in various forms of writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
eighteenth century
Orthographic variation of the same term.
1700s
Refers to the same period using a different numerical representation.
the 1700's
Another way to describe the same time period.
the seventeen hundreds
Expresses the century using words instead of numerals.
age of enlightenment
Highlights a key characteristic of the era, focusing on intellectual advancements.
Georgian era
Connects the period to the reigns of the British monarchs named George.
the long eighteenth century
Acknowledges differing views about the period's start and end dates extending beyond 1701-1800.
late modern period
Uses a broad term to refer to the historical period.
ancien régime
Describes the political and social system in France before the Revolution.
the era of revolutions
Highlights the revolutionary events that took place in this period.
FAQs
How do I use "18th century" in a sentence?
You can use "18th century" to describe events, styles, or figures that existed between 1701 and 1800. For instance, "The "18th century" was a time of great change in Europe."
What is another way to say "18th century"?
Alternatives include "eighteenth century", "the 1700s", or, depending on the context, phrases like "the Age of Enlightenment" or "the Georgian era".
Is it correct to say "in 18th century" or "in the 18th century"?
The correct phrasing is "in the "18th century"". The definite article "the" is necessary when referring to a specific century.
What were some major events of the "18th century"?
The "18th century" saw significant events like the American Revolution, the French Revolution, and the rise of Prussia as a major European power.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested