"converting into" is a grammatically correct phrase and can be used in written English.
For example, you could say "We are in the process of converting our paper documents into digital files."
On the one hand, policy has a habit of converting into costly legislation.
Enterprise also has the 'nuclear' option of converting into a real estate investment trust".
(The partnership that owns the building is now converting into a condominium).
| "Not for Sale," a gathering of art that, for whatever reason, its makers would not consider converting into cash.
CONS: The living room overlooks a site that Penn South is converting into what it calls a "junior" basketball court.
It secured options to buy the planes in 2013, which it was now converting into firm orders.
You can't shoot in sepia, so converting into black and white and then into brown makes everything feel less real.
A 20,000-square-foot warehouse, suitable for converting into studios and living space, sold for $230,000.
In the mine, those muon neutrinos scattered off of hydrogen nuclei in the water, converting into muons.
The algae work like solar panels, converting into nutrients sunlight flickering down from the surface of the sea.
An Owner Confronts A Co-op Sublet Fee Q -- In 1983 we bought an apartment in a rental building that our friends were converting into a co-op.
