What 60/40, 55/45, and 50/50 centering mean

Centering ratios describe how the border is split across opposite sides of a card. A 50/50 reading means the visible border is balanced. A 60/40 reading means one side appears to take about 60 percent of the combined border width while the opposite side takes about 40 percent.

50/50 is the visual ideal

A 50/50 reading is close to evenly centered on that axis. It does not mean the card is automatically gem mint. Corners, edges, surface, print quality, authenticity, and the back of the card still matter. It only says the measured borders on that axis are very balanced in the photo.

55/45 is usually a mild imbalance

A 55/45 reading often looks centered at a glance, especially on cards with narrow borders or busy artwork. It can still matter if the other axis is also off, if the back is weaker, or if the card is being evaluated for a very strict outcome. Treat it as a useful measurement, not as a guarantee.

60/40 is easier to see

A 60/40 reading means the thinner side is noticeably smaller than the wider side. Many collectors use 60/40 as a common risk marker, but exact acceptability depends on the card, side, condition context, and the current standards of the grading company. The app should be used as an estimate, not an official threshold source.

Read both axes together

A card can be 52/48 left-to-right and 62/38 top-to-bottom. In that case, the top/bottom axis carries more centering risk. The reverse can also happen, and back centering may be different from front centering. For a submission decision, look for the weakest measured side, not only the best-looking number.

Small guide changes can change the label

Border measurements are sensitive near label boundaries. A card that reads 55/45 in one photo might read 56/44 or 54/46 after a cleaner photo or a tiny guide correction. That is normal. Use ratio labels as risk ranges and compare them with the visible image instead of treating a single number as absolute.