convert
verb OPAL W
  /kənˈvɜːt/
  /kənˈvɜːrt/
Verb Forms
Idioms | present simple I / you / we / they convert |    /kənˈvɜːt/   /kənˈvɜːrt/  | 
| he / she / it converts |    /kənˈvɜːts/   /kənˈvɜːrts/  | 
| past simple converted |    /kənˈvɜːtɪd/   /kənˈvɜːrtɪd/  | 
| past participle converted |    /kənˈvɜːtɪd/   /kənˈvɜːrtɪd/  | 
| -ing form converting |    /kənˈvɜːtɪŋ/   /kənˈvɜːrtɪŋ/  | 
- [transitive, intransitive] to change or make something change from one form, purpose, system, etc. to another
- convert something They took just nine months to convert the building.
 - You need to ensure that you've converted the data properly.
 - The pub is a converted warehouse.
 - convert something into something The hotel is going to be converted into a nursing home.
 - What rate will I get if I convert my dollars into euros?
 - convert something to something The system is eco-friendly because the waste heat is converted to electricity.
 - convert from something Japan was at the time still converting from an agricultural economy.
 - convert into/to something A lot of conventional farmers have converted to organic production.
 - convert from something to something We've converted from oil to gas central heating.
 
Extra ExamplesTopics Buildingsb2- They live in a converted mill.
 - to convert securities into shares
 
 - [intransitive] convert into/to something to be able to be changed from one form, purpose, or system to another
- a sofa that converts into a bed
 - In fruits, starch converts into sugar.
 
 - [intransitive, transitive] to change your religion or beliefs; to make somebody change their religion or beliefs
- convert from something He converted from Catholicism 20 years ago.
 - convert to something She converted to Judaism to marry him.
 - convert from something to something He converted from Christianity to Islam.
 - convert somebody from something Evangelical Christian groups were trying to convert Africans from indigenous religions.
 - convert somebody to something She was soon converted to the socialist cause.
 - convert somebody from something to something Mongolia was converted from shamanism to Buddhism in the late 16th century.
 
 - [intransitive, transitive] to change an opinion, a habit, etc.
- convert (from something) to something I've converted to organic food.
 - convert somebody (from something) (to something) I didn't use to like opera but my husband has converted me.
 
Extra ExamplesTopics Opinion and argumentc1- The Prime Minister was in favour of the idea but he never managed to convert the party.
 - I've never liked opera but you might convert me!
 
 - [transitive] convert something (in rugby and American football) to score extra points after a try or a touchdownTopics Sports: ball and racket sportsc2
 
Word OriginMiddle English (in the sense ‘turn round, send in a different direction’): from Old French convertir, based on Latin convertere ‘turn about’, from con- ‘altogether’ + vertere ‘turn’.
Idioms 
preach to the converted 
(also preach to the choir especially in North American English)
- to speak to people in support of views that they already hold
- I realize I may be preaching to the converted, but I think he's gorgeous.