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
it existed when
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it existed when" is correct and usable in written English.
You can use it to refer to a specific time or condition in which something was present or occurred. Example: "The ancient civilization thrived in the valley, and it existed when the rivers were full and the climate was favorable."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
8 human-written examples
The country can only become more unstable as it becomes sicker, but its leaders cling to their view of Russia as it existed when there was a Soviet Union.
News & Media
Nothing like it existed when the ominously named Sexually Violent Predator Act was passed in 1998.
News & Media
It is a smudge of light only a tiny fraction of the size of our own Milky Way galaxy, and it existed when the universe was only 480 million years old.
News & Media
But the climate minister honed in on the way the publicly funded BBC still focused on the "sterile" debate over whether it existed when most scientists are firmly in one camp.
News & Media
The private gated community, which begins where the streets and Boardwalk of Coney Island end, is so far west in the borough and so secluded that Drs. Reinisch and Rosenblum, both psychologists, did not realize it existed when they went to Steeplechase Park in Coney Island as children.
News & Media
How carefully do you have to watch what they're doing on "Weeds" to make sure you're not repeating those storylines? A. "Weeds" is a very good show that I'd like to go on record as saying I didn't know it existed when I first came up with the idea of "Breaking Bad".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
Granted that the table would exist if it were perceived, does it exist when it is not perceived?
Encyclopedias
This clip comes from Hunan TV's Mid-Autumn Festival celebration, an annual television extravaganza roughly along the lines of the Macy's Thanksgiving Day Parade telecast, i.e. you remember it exists when you flip past and find it.
News & Media
It does not exist in aggregations of people without order or moral union, it exists when a set of people choose to unite as a community.
Science
This paper models the phenomenon of collective invention as it exists when the disclosure of information among competing entities creates a positive feedback that allows for high innovation rates and fast knowledge accumulation.
It is, after all, quite uncontroversial that my seeing or hearing a dog gives me information about some particular dog as it exists when I see or hear it.
Science
Expert writing Tips
Best practice
When describing historical contexts, use "it existed when" to clearly indicate the temporal relationship between a subject and a specific era or event. For example, "The kingdom flourished, and "it existed when" trade routes were open and secure."
Common error
Avoid using "it existed when" to describe something that still exists. "Existed" implies a past state. Use "it exists now" or "it exists currently" if the subject is ongoing.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it existed when" functions as an adverbial clause, specifying the temporal context for the main clause. It indicates the time period during which a particular state or condition was valid. Ludwig examples show this use in historical and scientific contexts.
Frequent in
News & Media
40%
Science
30%
Encyclopedias
10%
Less common in
Formal & Business
10%
Reference
5%
Wiki
5%
Ludwig's WRAP-UP
The phrase "it existed when" serves to provide a temporal context, indicating the period in which something was valid. According to Ludwig, the phrase is grammatically correct and primarily appears in news, science, and encyclopedia sources, suggesting a neutral to formal register. When using this phrase, ensure clarity about whether you're referring to a past state or an ongoing condition, and remember that it exists when indicates a present condition. Furthermore, according to Ludwig, "it existed when" is correct and usable in written English.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it was present during
Focuses on the presence of something during a specific timeframe.
it was the case at that time
Emphasizes that something was factual or true during a particular period.
it was around at the time
Emphasizes the availability or existence of something during a particular period.
it functioned when
Focuses on the operational aspect of something during a specific timeframe.
it prevailed then
Highlights the dominance or commonality of something at a given time.
it was operational then
Highlights the working state of something at a specific time.
it was then in effect
Highlights that something was operational or legally binding at a certain time.
it was in vogue when
Indicates that something was fashionable or popular during a specific period.
it flourished in that era
Indicates that something thrived or prospered during a specific period.
it held true at that point
Stresses the veracity or validity of something at a certain time.
FAQs
How can I use "it existed when" in a sentence?
Use "it existed when" to specify the time frame during which something was present or functional. For example, "The practice of bloodletting was common, and "it existed when" medical knowledge was limited".
What can I say instead of "it existed when"?
Alternatives include "it was present during", "it was around at the time", or "it prevailed then", depending on the nuance you want to convey.
Is it correct to say "it exists when" instead of "it existed when"?
The phrases have different meanings. "It existed when" refers to a past state, while "it exists when" indicates a present or ongoing condition. Choose the phrase that accurately reflects the timeline.
What's the difference between "it existed when" and "it was created when"?
"It existed when" refers to the period during which something was present or functional, while "it was created when" indicates the specific point in time at which something came into being. They focus on different aspects of the timeline.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested