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
factor something in
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "factor something in" is correct and usable in written English. You can use it when discussing the inclusion of a variable or consideration in a calculation or decision-making process. For example: "When planning the budget, we need to factor in unexpected expenses." Alternative expressions include "take into account" and "consider."
✓ Grammatically correct
News & Media
Science
Professional
Alternative expressions(16)
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
1 human-written examples
The only problem was the noise factor — something in the mix seemed to have redoubled not only the volume but the fury of the birds' calls, so that you needed earplugs if you wanted to enjoy pretty much any outdoor activity).
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Instead, users also need a second factor ("something you have") to log in to their accounts.
News & Media
So he quickly published something in a journal with a miniscule impact factor, something like the Journal of Everyone Gets a Trophy.
Science & Research
Sexual arousal is dependent on neural (sensory and cognitive), hormonal, and genetic factors, something also defined in Ayurveda as well but using a scientific language pertinent to this age.
This may signify some difference between the pharmacist patient (patient-oriented) and pharmacy patient (business-oriented) relationships [ 32, 56, 57]; pharmacists' professional behavior may have depended more on individual factors (e.g., professional commitment, qualifications, ethical cognition) than organizational factors, something that should be explored in future studies.
Science
Thus, in the CTS analysis we were able to adjust for known breast cancer risk factors, something we were not able to do in this statewide study.
Ultimately, Sapolsky finds he has to factor in something as quirky as personality.
News & Media
Tolerance looks even better when we factor in something "The Problem of Social Cost" did not consider: the value of innovation and learning.
News & Media
But Sullenberger's reserve notwithstanding, investigators are loath to lay credit or blame on any one factor in something as complex as an aviation accident.
News & Media
However, there is something in The X Factor's romantic sense of the future and its possibilities that I shall be careful not to crush.
News & Media
It may also factor in borrowers' credit scores, something it has not done in the past.
News & Media
Expert writing Tips
Best practice
Use "factor something in" when you are explaining how a specific piece of information or a variable influences a larger outcome or decision. It works best in analytical or planning contexts where multiple elements must be weighed against one another.
Common error
Do not use "factor something in" when you mean to remove or ignore a variable. The opposite phrase is "factor out". Ensure that you are discussing the inclusion of a factor rather than its exclusion to maintain clarity in your analysis.
Source & Trust
91%
Authority and reliability
4.9/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "factor something in" acts as a transitive phrasal verb. In linguistic terms, it requires an object (the 'something') that is being included in a set of considerations. As seen in Ludwig AI examples, the object can be placed between the verb and the particle or after the particle.
Frequent in
News & Media
45%
Science
30%
Formal & Business
20%
Less common in
Wiki
3%
Social Media
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "factor something in" is a robust and essential phrasal verb for anyone involved in analytical writing or professional communication. According to Ludwig, it is widely utilized by top-tier publications to describe the integration of variables into a broader context. Whether you are discussing economic forecasts or personal decisions, using this phrase correctly demonstrates a structured and thorough approach to problem-solving. Remember to maintain the particle "in" to ensure the meaning of inclusion is preserved.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
take something into account
more formal and commonly used in legal or academic writing
consider something
a simpler and more direct verb for general contexts
allow for something
specifically suggests preparing for a potential problem or variation
include something
focuses on the act of adding an item to a list or calculation
account for something
implies explaining or providing a reason for a specific factor
bear something in mind
suggests keeping information accessible during a thought process
reckon with something
implies dealing with a difficult or significant factor
incorporate something
suggests integrating a factor into a larger structure or system
weight something
used in statistics to denote giving a factor specific importance
integrate something
implies a seamless merging of a new factor into a plan
FAQs
How do I use "factor something in" in a sentence?
You use it when adding a variable to a calculation. For example, "When estimating travel time, you must "factor in traffic" conditions."
What is the difference between "factor in" and "consider"?
While both involve thinking about something, "factor in" often implies a more systematic or mathematical inclusion in a decision process, whereas "consider" is broader and can be more subjective.
Can I use "factor into" instead of "factor in"?
Yes, you can say something "factors into" a decision. "Factor in" is usually the active form (you factor something in), while "factor into" describes the relationship (the cost factors into the decision).
What can I say instead of "factor something in"?
You can use synonyms like "take something into account", "allow for", or "incorporate" depending on the formality of the situation.
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
91%
Authority and reliability
4.9/5
Expert rating
Real-world application tested