You can remove your old flooring and lay your new flooring down.
Toilet flange half inch above floor.
Once you have an exact measurement go to your local flooring or home improvement store and purchase tile with the thickness that you need.
If not a toilet spacer can be added.
When preparing to install the toilet the first thing to confirm is the proper flange height.
Should remedy your problem easily.
Btw 1 4 below finished floor is not perfect for the flange.
This is very important.
With the toilet removed you can see the toilet flange and measure its height above the floor.
The critical feature is how much higher the under toilet ceiling is than the bottom perimeter base that sits on the finished floor.
To do this you ll want to first measure how much higher the toilet flange is currently sitting above your bathroom floor.
Optimum flange height to aim for is 1 4 inch above the finished floor.
The optimum toilet flange height is approximately inch above the floor to achieve the best seal and overall fit.
When you install your toilet flange it should be installed on top of the finished floor and it should also be installed perfectly level.
If your flange sits even or below the floor then it s wrong.
Since this dimension is intended to work with a standard wax ring there s little chance a 3 4 protrusion will work.
It has to sit evenly on top of the finished floor.
The first thing to do is measure the inset on the bottom of the toilet it may be enough to work with the flange high.
The bottom of the flange should sit on top of the finished floor.