This online service helps you to know how long your product is in good condition. In order to calculate expiry date, you should look at Production Date on your wrapping and write it into relevant field. Also it is necessary to find the mark: Expiry with date in days, in months or in years. After entering data you push button Check and calculator will show you if expiry date is over and how much time product is left before it passes its expiration date. Definition of expiry noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Expiry is typically used to refer to the end of a period of time, such as the end of a contract, document, or license. This could include the expiration date of a product, a job contract, or a credit card. Expiry and expiration both inherently imply an end or a termination of something, frequently pertaining to time or life cycle. Expiry often finds its place in contexts like the end date of a contract or an agreement. Meanwhile, expiration, while it can also be used in such contexts, can denote the end of one’s breath, indicating a slightly broader usage in specific contexts.