In Singapore, the most common mahjong tile sizes are A1 and A2. The dimensions for each are as follows: A1 size is 37 mm x 28 mm x 22 mm (3.7 cm x 2.8 cm x 2.2 cm), and A2 size is 35 mm x 26 mm x 20 mm (3.5 cm x 2.6 cm x 2.0 cm). However, we recommend the A1 size for a better overall gaming experience.
