Can i use mac power adapter(61W) to charge my iPhone12?
Since iPhone12 requires a USB-C adapter, can i use my Mac's charging adapter to charge my iPhone12?
Question marked as
Yes. See below from Charge your iPhone with an iPad or Mac notebook power adapter - Apple Support
You can use Apple USB power adapters for iPad and Mac notebooks to charge iPhone, iPod, Apple Watch, AirPods, and other Apple products.
and also see the information in: Fast charge your iPhone - Apple Support