Original Polaroid integral film and the current Polaroid integral film are identical in their size and dimensions. Well, actually, current Polaroid film is a little thicker, but that's another story.
Polaroid SX-70, 600 and i-Type film measures exactly 3.108 × 3.024 inches (photo area) and 4.233 x 3.483 inches (total area). That's 7.894 x 7.6801 cm (photo area) and 10.752 x 8.847 cm (total area).
Read more about what film to use with Polaroid cameras