convert from

convert from something (into something)

 and convert (from something) (in)to something
to change from one thing into another. We converted from oil to natural gas to heat our house. I had hoped he would convert from an impatient youth into a relaxed gentleman. He did not.
See also: convert
References in periodicals archive ?
It is not right that a convert from Islam must live clandestinely, go to a church that is 30 kilometers from his home because he is afraid that the Muslim community will punish him.
I'll answer your question about the Tab key and show you how to get around the problem, but I suspect you'd feel more comfortable not working in a table at all; so I'll also tell you how to convert from table data to text and vice-versa.
Under the conversion plan, S will convert from a mutual association to a stock company and all of its newly issued shares will be simultaneously purchased by P (a newly formed holding company) using a portion of the initial stock offering proceeds raised by P from its shareholders.
Saint Edith Stein, a convert from Judaism, was not canonized because of her conversion to Catholicism, but rather for her heroic actions as a Catholic Carmelite nun.