look for a photo of a cabinet.
Cabs are usually about 850mm high, with a 150mm plinth. So you have 700mm or so for the door. If there are two equal drawer fronts they will be about 350mm (I foot 2 inch) high each, and the inside space smaller.
The inside will be about 660mm tall inside, due to thickness of the carcase
If Ikea have a smaller plinth, the cabinet may be bigger inside.