Card Centering Analysis Tool
Centering is one of the four sub-grades in every MasterGrade scan. Our AI measures exact border ratios mathematically — no guessing. Upload a card and the centering measurement is included automatically in your full grade report.
Impact on grades
How centering affects your grade
Centering accounts for 20% of the overall MasterGrade score. At PSA, centering alone can cap a card's grade — even a card with flawless surface, corners, and edges will be limited if centering exceeds tolerance. Understanding the ratio thresholds helps you set realistic expectations before submitting.
Standards reference
Centering ratio breakdown
The ratio describes the proportional difference between opposite borders. A 60/40 ratio means the wider border is 60% of the combined border width on that axis.
Gem Mint
Grade: 10.0Perfect centering on both axes. Extremely rare on modern cards and almost impossible on vintage.
Near perfect
Grade: 9.5–10.0Slight centering shift barely visible to the naked eye. This is the realistic best-case for most pack-fresh cards.
Acceptable shift
Grade: 8.5–9.0Noticeable if you look for it, but within PSA 9 tolerance on most submissions. Still a strong grade.
Visible off-center
Grade: 7.0–8.0Clear centering shift visible at arm’s length. This will cap your overall grade in most cases.
Significantly off-center
Grade: Below 7.0Major centering defect. The card is clearly miscut. Centering alone will drag the overall grade down considerably.
How it's measured
Mathematical border measurement
MasterGrade's centering pass detects two boundaries: the outer card edge and the inner printed border. It computes the distance from each edge to the corresponding border on all four sides, then expresses the result as a ratio for left-right and top-bottom independently.
Example: good centering
52/48 L-R
51/49 T-B
Nearly imperceptible shift. Centering sub-grade: 9.5+
Example: poor centering
55/45 L-R
68/32 T-B
L-R is fine, but T-B is the bottleneck. Centering sub-grade: ~7.0
Centering tips
Things to know about centering
Front and back can differ
A card can be perfectly centered on the front but off-center on the back (or vice versa). PSA grades based on the worse side. MasterGrade analyzes both photos.
Left-right vs top-bottom
Centering is measured on both axes independently. A card at 52/48 left-right but 62/38 top-bottom will be graded on the worse axis (62/38).
Vintage vs modern tolerances
Vintage cards (pre-2000) have more lenient centering expectations. A 60/40 vintage card can still achieve high grades because print quality was less precise.
Holo bleed is not centering
Holo bleed (where the holographic layer extends past the card art boundary) is a print artifact, not a centering issue. It does not affect the centering sub-grade.
Grading company standards
Centering tolerances by grading service
| Service | Gem Mint (10) | Mint (9) | NM-MT (8) |
|---|---|---|---|
| PSA | 55/45 or better | 60/40 or better | 65/35 or better |
| BGS | 50/50 to ~52/48 | 55/45 or better | 60/40 or better |
| CGC | 55/45 or better | 60/40 or better | 65/35 or better |
Note: BGS is generally stricter on centering than PSA or CGC. These are approximate tolerances based on publicly documented standards and community observations.
Check your card's centering
Upload a card photo to get an AI-measured centering ratio plus sub-grades for corners, edges, and surface. Your first scan is free every day.
Grade a card now