American Mahjong mat size guide
Start with your tabletop, then choose the design. Mahj-ni ficant mats measure approximately 31.5 inches (80 cm) square. Check both table dimensions and leave room for the way your group plays.
Our mat size is a product specification, not a universal Mahjong standard. A mat that fits the tabletop may still leave too little room for your racks, cards or drinks.
Measure before you choose
Use the flat surface inside any raised rim. Measure width and depth, not the table's outside frame.
If either is smaller, the square mat will overhang. The examples below assume the mat is centered.
Check where racks, cards and drinks will sit. The extra edge space is not a promise that every setup will feel comfortable.
Try your measurements
Square or rectangular flat tabletops only. Measurements are calculated in your browser and are not sent anywhere.
| Usable tabletop | Space beyond each mat edge | Fit note |
|---|---|---|
| 30 × 30 inches | 0.75-inch overhang | Too small to support the full mat |
| 34 × 34 inches | 1.25 inches | Fits; limited edge space |
| 36 × 36 inches | 2.25 inches | Fits; check your rack and card layout |
| 40 × 40 inches | 4.25 inches | Fits with more space around the mat |
Using a round table? A centered 31.5-inch square has a diagonal of about 44.6 inches. That is the minimum usable round-table diameter to support all four corners, not a comfort recommendation. Allow extra room for the full table setup.
Our 17.7oz smooth leatherette option is approximately 1mm thick. It is not neoprene, rubber-backed or foam-backed. Compare the material description on the product page with the feel and care you want.
Compare Mahjong mats and materialsCompare your tiles against the playing field and border. Look at the colors your group already owns and choose artwork that gives the tiles clear visual separation.
Plan space to roll the mat rather than sharply fold it. Follow the product care guidance and do not assume a leatherette mat is machine washable.
Questions
Use the dimensions of the mat you are considering rather than assuming every brand is the same. Our listed mats are approximately 31.5 inches square. Measure your usable tabletop before ordering.
No. These mats are decorative playing surfaces. They do not replace the annual card or your group's agreed rules.
Choose a mat alone when the table surface is all you need. A coordinating edition of The Table adds a place for scores and game-night memories. Check that your preferred design has a matching book before choosing a set.
Find your table's design
Shop the mat by itself or explore a coordinating scorebook and mat set. Check the product page for the exact design, material and available options before ordering.
Keep shopping
Compare scorebooks, coordinated sets and gifts for your next table.
Mahj-ni ficant by AM · Updated September 3, 2026
Measurements and materials are from our store catalog. Table-fit examples are calculated from the listed mat size, not hands-on testing of individual tables.