First, the observable universe. From WP:
The comoving distance from Earth to the edge of the observable universe is about 14 billion parsecs (46.5 billion light-years) in any direction. The visible universe is thus a sphere with a diameter of about 28 billion parsecs (about 93 billion light-years). Assuming that space is roughly flat, this size corresponds to a comoving volume of about 3×10^80 cubic meters. This is equivalent to a volume of about 41 decillion cubic light-years short scale (4.1 × 10^34 cubic light years).
Now for the whole universe:
According to the theory of cosmic inflation and its founder, Alan Guth, if it is assumed that inflation began about 10^-37 seconds after the Big Bang, then with the plausible assumption that the size of the Universe at this time was approximately equal to the speed of light times its age, that would suggest that at present the entire Universe's size is at least 10^23 times larger than the size of the observable Universe.