iPad 10.9" (10th gen) vs iPad Air 11" (M2)

The iPad 10.9" (10th gen) and iPad Air 11" (M2) are most easily told apart by their overall size. On height, the iPad Air 11" (M2) measures 249.7 mm against the iPad 10.9" (10th gen)'s 248.6 mm — about 1.1 mm more. On width, the iPad 10.9" (10th gen) measures 179.5 mm against the iPad Air 11" (M2)'s 177.5 mm — about 2.0 mm more. On thickness, the iPad 10.9" (10th gen) measures 7.5 mm against the iPad Air 11" (M2)'s 6.1 mm — about 1.4 mm more.

The iPad 10.9" (10th gen) is the heavier of the two at 477 g, compared with 462 g for the iPad Air 11" (M2). That is a 15 g difference (3%). The gap is small enough that you would barely notice it day to day.