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
equivalent as
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "equivalent as" is not correct in standard written English.
The correct expression is typically "equivalent to." Example: "The two methods are equivalent to each other in terms of efficiency."
⚠ May contain grammatical issues
Science
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
All six axial hydrogens are equivalent, as are all six equatorial bonds.
Encyclopedias
The barometer was also above the UK equivalent, as has been the case throughout the past year.
News & Media
Arousal ratings for pleasant and neutral pictures were equivalent, as were valence ratings for interesting and neutral pictures.
Science
HA and PA are proof-theoretically equivalent, as will be shown in Section 4. Each is capable of (numeralwise) expressing its own proof predicate.
Science
In the special theory of relativity, mass and energy are equivalent (as can be seen by calculating the work required to accelerate an object).
Wiki
Therefore, the closed form of the expectation is equivalent as well.
Science
These differences at 6 months will be compared using a two-sample t-test or distribution-free equivalent, as appropriate.
Science
However, remission and complete remission rates were equivalent, as was the significance of the mean change in CDEIS score from baseline to week 10.
Science
The number of STIs treated per full-time doctor equivalent, as well as the cost-efficiency per STI treated, was least in the medical college hospital STI clinics.
Science
The AUC0-inf and AUC0-tau estimates were essentially equivalent, as would be expected given the observed rapid elimination of artesunate (Table 4).
For the sites investigated, similar results were obtained by streptavidin-mediated tethering using p-AcF rather than p-AzF, suggesting that the two strategies are equivalent, as expected.
Science
Expert writing Tips
Best practice
Always use "equivalent to" instead of "equivalent as". The preposition "to" is the correct grammatical choice following "equivalent."
Common error
Avoid using "as" after "equivalent". The correct preposition is "to". For example, say "This is equivalent to that", not "This is equivalent as that".
Source & Trust
82%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "equivalent as" functions as a comparative expression, attempting to establish a relationship of equality or similarity between two entities. However, as Ludwig AI notes, this specific phrasing is grammatically incorrect.
Frequent in
Science
60%
News & Media
40%
Formal & Business
0%
Less common in
Encyclopedias
0%
Wiki
0%
Academia
0%
Ludwig's WRAP-UP
In summary, the phrase "equivalent as" is grammatically incorrect. The correct form is "equivalent to". Ludwig AI confirms this, highlighting that the proper preposition to use with "equivalent" is "to", not "as". While examples of the incorrect phrase exist, they are rare and should be avoided in formal writing. Use "equivalent to", "equal to", or "comparable to" instead for clarity and grammatical accuracy. While it appears in Science and News & Media contexts, its incorrect usage significantly diminishes its effectiveness and credibility.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
equivalent to
Corrects the grammatical structure to use the standard preposition 'to' after 'equivalent'.
equal to
Offers a direct synonym replacing 'equivalent' while maintaining the correct preposition.
comparable to
Suggests a broader sense of similarity, still maintaining correct grammatical structure.
the same as
Provides a more informal way to express equivalence.
tantamount to
Offers a more formal synonym for 'equivalent' with the correct preposition.
interchangeable with
Highlights the ability to be used in place of each other.
corresponding to
Emphasizes a direct relationship or match.
analogous to
Suggests a similarity based on analogy or comparison.
commensurate with
Indicates a proportional or equivalent relationship.
on par with
Implies a similar level or standard.
FAQs
What is the correct way to use "equivalent" in a sentence?
The correct way to use "equivalent" is with the preposition "to", as in "equivalent to". For example, "The two amounts are "equivalent to" each other."
What can I say instead of "equivalent as"?
Instead of "equivalent as", you should use "equivalent to", "equal to", or "comparable to".
Is "equivalent as" grammatically correct?
No, "equivalent as" is not grammatically correct. The standard English usage is "equivalent to".
What's the difference between "equivalent to" and "the same as"?
"Equivalent to" and "the same as" are similar, but "equivalent to" often implies a more precise or measurable comparison. "The same as" can be used more broadly. In many contexts, they are interchangeable.
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
2.8/5
Expert rating
Real-world application tested