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
they calculated that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they calculated that" is correct and usable in written English.
It can be used when discussing findings, estimates, or conclusions derived from mathematical or analytical processes. Example: "After analyzing the data, they calculated that the project would take an additional three months to complete."
✓ Grammatically correct
News & Media
Academia
Science
Encyclopedias
Wiki
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
They calculated that zero tolerance would head off an escalation.
News & Media
They calculated that babies were 40 times as likely to suffocate in beds as in cribs.
News & Media
They calculated that he had an 80percentt chance of dying within a month.
News & Media
They calculated that the economic toll, meanwhile, was tens of billions each year.
News & Media
They calculated that renovating the 30 stations most desperately in need would run $14 billion.
News & Media
Taking this information into account, they calculated that the ancient cricket produced chirps lasting 16 milliseconds.
News & Media
They calculated that alcohol causes 3.5% of U.S. cancer deaths, or about 20,000 cancer-related deaths each year.
Academia
Antihydrogen did not behave weirdly, so they calculated that it cannot be more than 110 times heavier than hydrogen.
At that rate, they calculated that some local populations would be effectively extinct in four salmon generations, about eight years.
News & Media
Still, they calculated that their weekend grocery bill was at least 30percentt higher than in Pennsylvania.
News & Media
Perhaps they calculated that winning health care would strengthen them for climate change, like Popeye after a helping of spinach.
News & Media
Expert writing Tips
Best practice
Use "they calculated that" to introduce a specific numerical result or outcome derived from a quantifiable process, avoiding vague or unsubstantiated claims.
Common error
Avoid using "they calculated that" when the result is based on a rough estimate or approximation. Instead, use phrases like "they estimated" or "they guessed" to reflect the level of accuracy.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they calculated that" functions as a reporting clause, introducing a statement that results from a computational or analytical process. As Ludwig AI explains, it's a common way to present findings based on data, seen across various contexts.
Frequent in
News & Media
58%
Academia
21%
Science
13%
Less common in
Encyclopedias
3%
Wiki
2%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, "they calculated that" is a widely used phrase to introduce a finding derived from a calculation. It is grammatically correct and appears most frequently in news, academic, and scientific contexts. As Ludwig AI confirms, the phrase is acceptable in written English and effectively conveys objective, data-driven conclusions. When using this phrase, ensure the context supports the claim of a precise calculation rather than a rough estimate. While alternatives like "they estimated that" or "they determined that" exist, "they calculated that" is particularly suited for conveying quantified results with credibility.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they estimated that
Replaces "calculated" with "estimated", implying a less precise determination.
they determined that
Substitutes "calculated" with "determined", suggesting a conclusion reached after consideration.
they figured out that
Uses the informal "figured out" instead of "calculated", making it less formal.
their calculations showed that
Restructures the sentence to emphasize the calculations themselves leading to the result.
it was their assessment that
Changes the focus to their overall assessment, implying a broader evaluation.
they predicted that
Replaces "calculated" with "predicted", indicating a forecast or expectation.
they projected that
Uses "projected" instead of "calculated", suggesting an extrapolation of existing data.
they concluded that
Emphasizes the final conclusion reached after a process of reasoning.
they anticipated that
Shifts the meaning to anticipation or expectation rather than a precise calculation.
their analysis indicated that
Focuses on the analysis process leading to a particular indication or result.
FAQs
How can I use "they calculated that" in a sentence?
Use "they calculated that" to introduce a conclusion derived from a specific calculation. For example, "They calculated that the project would be completed by the end of the year".
What are some alternatives to "they calculated that"?
You can use alternatives like "they estimated that", "they determined that", or "they figured out that" depending on the context.
Is it appropriate to use "they calculated that" in formal writing?
Yes, "they calculated that" is appropriate for formal writing, especially when presenting results from research, analysis, or data-driven decision-making. It indicates a precise and methodical approach.
What's the difference between "they calculated that" and "they estimated that"?
"They calculated that" implies a precise computation, while "they estimated that" suggests an approximate or judgmental assessment. Use "calculated" when you have specific data and methods, and "estimated" when you're making an informed guess.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested