back-of-the-envelope

adjective

: done quickly to provide a rough estimate : not exact
did a back-of-the-envelope calculation
His method is, in effect, a back-of-the-envelope time-and-motion study.Ian Stewart

Examples of back-of-the-envelope in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Caveating that many basic questions remain unanswered, a back-of-the-envelope calculation shows a clear trade-off between immediate monthly affordability and long-term debt accumulation. Preston Fore, Fortune, 12 Nov. 2025 So a back-of-the-envelope calculation would put $2,000 stimulus checks at a total cost of about $326 billion. David Goldman, CNN Money, 10 Nov. 2025 Antony Karabus, a longtime strategic adviser to retailers, gave a back-of-the-envelope accounting of how the costs of all the retail must-haves have changed since 2017 or 2018. Evan Clark, Footwear News, 10 Oct. 2025 Just back-of-the-envelope energy math. Marisa McMillan, Outside, 7 Oct. 2025 When the Legislature convened early this year, back-of-the-envelope math suggested school choice would pass, especially since the new House speaker, Dustin Burrows, was open to such proposal. John C. Moritz, Austin American Statesman, 30 July 2025 While there’s no perfect answer, the 25x rule offers a simple, back-of-the-envelope way to estimate retirement savings needs. Andrew Rosen, Forbes.com, 22 May 2025 At the high end of back-of-the-envelope calculations — Mr. Galloway said the podcasts could generate $100 million in revenue over the four years — the pair would stand to make about $70 million excluding some costs. Jessica Testa, New York Times, 19 May 2025 While Sloan did not volunteer a hard dollar amount, a little back-of-the-envelope math based on legal filings and other financial documentation suggests that the RSNs and other in-market platforms may expect to lose a grand total of $60 million in ad revenue next season. Anthony Crupi, Sportico.com, 2 May 2025

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of back-of-the-envelope was in 1968

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Cite this Entry

“Back-of-the-envelope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/back-of-the-envelope. Accessed 25 Nov. 2025.

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