factor in

British

verb

(tr, adverb) to take account of (something) when making a calculation

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

factor in Idioms

Figure in, include as a basic element. For example, In preparing the schedule we factored in vacation and sick days. This term comes from mathematics. [Mid-1900s]

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

factor in

Working with former Wimbledon champion Marion Bartoli has been a big factor in Dart's resurgence.

From BBC ● Nov. 1, 2026

The environmental justice movement is now a permanent factor in civic politics.

From Los Angeles Times ● Oct. 30, 2026

The company also updated its profit guidance to factor in acquired in-process research-and-development charges, now forecasting adjusted earnings per share of $35 to $36, compared with $35.50 to $36.50 previously.

From The Wall Street Journal ● Oct. 29, 2026

The findings, published in General Psychiatry, point to daytime light exposure as a potentially overlooked factor in brain health.

From Science Daily ● Oct. 29, 2026

I would have made it past the teachers with no problem, but I forgot to factor in Heather.

From "Speak" by Laurie Halse Anderson

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023