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To determine the total cost of something by adding smaller costs together. When we cost out all the steps of our home renovation project, we knew that it was going to exceed the amount we had budgeted.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
cost something out
to figure out the total cost of some set of costs or a complex purchase of goods or services. Give me a minute to cost this out, and I will have an estimate for you. Do you have time to cost out these specifications this week?
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.