به درد خوردن

Question

معادل اصطلاح "به درد خوردن" در انگلیسی چه می باشد؟

Answer 1

A context?

In everyday conversations, people say 'come in handy' as in

'I knew this jacket would come in handy one day.'

میدونستم این کت یه روز بدرد میخوره

http://www.macmillandictionary.com/dictionary/british/come-in-handy

Also

It's no good.

بدرد نمیخوره

It's useful

بدرد میخوره

Answer 2

Serve a purpose

to have a particular use or function :  to be useful or helpful in some way

example: Everything on the boat serves a purpose .

https://www.merriam-webster.com/dictionary/serve%20a%20purpose