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
that would have
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that would have" is correct and usable in written English.
It is typically used to express a hypothetical situation or an action that did not occur in the past but was possible. Example: "If I had known about the meeting, that would have changed my plans."
✓ Grammatically correct
News & Media
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
60 human-written examples
Often, that would have been difficult.
News & Media
That would have snowballed.
News & Media
That would have delighted Brussels.
News & Media
That would have ruined everything.
News & Media
That would have been me".
News & Media
That would have been awkward.
News & Media
That would have taken time.
News & Media
"That would have been storybook".
News & Media
That would have been something.
News & Media
That would have made enemies.
News & Media
That would have been humiliating.
News & Media
Expert writing Tips
Best practice
To enhance clarity, ensure that the context clearly establishes the conditions under which the hypothetical event "would have" occurred.
Common error
Avoid using "that will have" or "that is going to have" instead of "that would have" when discussing past hypothetical situations. The future tenses do not convey the intended meaning of a condition that was not met in the past.
Source & Trust
94%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that would have" primarily functions as a conditional perfect construction. It describes hypothetical outcomes or consequences in the past that did not occur. As Ludwig AI confirms, the phrase is correct and commonly used.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Unknown/unmatched sources
0%
Ludwig's WRAP-UP
In summary, "that would have" is a grammatically correct and frequently used phrase for expressing hypothetical past scenarios. Ludwig AI validates its usage, indicating it's a standard construction in English. Predominantly found in news and media, it serves to communicate missed opportunities, speculate on alternative realities, or express regret. To use it effectively, ensure that the context clearly sets up the hypothetical conditions and avoid confusing it with future tenses. By understanding its function and purpose, writers can leverage "that would have" to add depth and nuance to their expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
it would have
Adds a pronoun for emphasis or clarity, slightly altering the sentence structure.
that might have
Replaces "would" with "might", indicating a possibility less certain than a conditional.
that could have
Substitutes "would" with "could", suggesting a potential ability or capacity in the past.
that should have
Replaces "would" with "should", implying a moral obligation or expectation.
if that had happened
Recasts the phrase as a condition, focusing on the hypothetical event itself.
in that scenario
Expresses the idea as being dependent on hypothetical circumstances.
under those circumstances
Similar to "in that scenario", this highlights the conditional nature of the outcome.
had that been the case
More formal way to express a hypothetical past situation.
under different conditions
Highlights the impact of altering the circumstances on the potential result.
it was destined to
Implies an inevitable outcome based on past conditions.
FAQs
How to use "that would have" in a sentence?
Use "that would have" to describe a past event that did not happen but could have if conditions were different. For example, "If I had studied harder, "that would have" improved my grade".
What can I say instead of "that would have"?
You can use alternatives like "that might have", "that could have", or "it would have" depending on the context.
Which is correct, "that would have" or "that will have"?
"That would have" is correct for describing hypothetical past situations. "That will have" is used for future perfect tense, indicating something that will be completed by a specific time in the future and has a different meaning.
What's the difference between "that would have" and "that should have"?
"That would have" indicates a hypothetical outcome, while "that should have" implies an expectation or obligation that was not fulfilled. For instance, ""that would have" been great" expresses a missed opportunity, whereas "that should have been done" suggests a duty not performed.
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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
94%
Authority and reliability
4.6/5
Expert rating
Real-world application tested