1 a [+ obj] : to change (something) into a different form or so that it can be used in a different way — usually + to or into ▪ The cells absorb light and convert it to energy. ▪ How do you convert pounds to grams? ▪ I need to convert my pesos back into dollars. [=I need to exchange my pesos for dollars] ▪ We converted the attic into a bedroom.
b [no obj] : to change to a different system, method, etc. — usually + to ▪ The factory converted to newer machinery.
c [no obj] : to change from one form or use to another — usually + to or into ▪ The sofa converts easily into a bed. 2 a [no obj] : to change from one religion, belief, political party, etc., to another — often + to ▪ He converted to Islam.
b [+ obj] : to persuade (someone) to change from one religion, belief, political party, etc., to another — often + to ▪ The missionaries converted the native people to Christianity. ▪ They tried to convert us to their way of thinking. — see also preach to the converted at preach 3 a : to score extra points after a goal or touchdown in rugby or American football [no obj] ▪ They tried for two points but could not convert. [+ obj] ▪ (rugby) They failed to convert the try.
b : to use (an opportunity, such as an opportunity to score points) successfully [+ obj] ▪ They had many chances to score but they couldn't convert their opportunities. [no obj] ▪ They had chances to score but couldn't convert.