How to calculate actual font point size in iOS 7 (not the bounding rectangle)?

Question

Edit: The linked \"duplicate\" question only deals with calculating text rectangle. I need to calculate actual font size after label scaled it, NOT the string size.<

Answer 1

Simple solution for one-line UILabel:

//myLabel - initial label

UILabel *fullSizeLabel = [UILabel new];
fullSizeLabel.font = myLabel.font;
fullSizeLabel.text = myLabel.text;
[fullSizeLabel sizeToFit];

CGFloat actualFontSize = myLabel.font.pointSize * (myLabel.bounds.size.width / fullSizeLabel.bounds.size.width);

//correct, if new font size bigger than initial
actualFontSize = actualFontSize < myLabel.font.pointSize ? actualFontSize : myLabel.font.pointSize;