What Does 55/45 Centering Look Like? PSA Centering Ratios Explained
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How to Read Centering Ratios for PSA Grades
See exactly what 50/50, 55/45, 60/40, and 65/35 centering looks like on real cards. Visual comparison photos with the PSA grades each ratio qualifies for.
Jamie Budesky·Founder, CardGrade·Published Dec 8, 2025 · Updated Jul 8, 2026·7 min read
What Are Centering Ratios?
Centering ratios describe how evenly a card's printed image is positioned within its borders. A ratio like 55/45 means the wider border is 55% of the total combined border width, while the narrower side is 45%. Every professional grading company uses centering ratios to evaluate cards, and understanding them is critical for predicting your grade before you submit.
If you have a card and want to measure its exact centering, use our free card centering calculator to get precise measurements in seconds.
Visual Centering Examples
Below are visual diagrams showing what each common centering ratio looks like on a standard trading card. The dashed inner rectangle represents the printed card image, and the space between it and the card edge is the border.
50/50 — Perfect Centering
A 50/50 ratio means the borders are perfectly equal on both sides. This is ideal centering and qualifies for the highest grades at every grading company:
PSA: Gem Mint 10
BGS: Pristine 10 (centering sub-grade)
CGC: Pristine 10
SGC: Pristine 10
In reality, perfect 50/50 centering is rare. Most cards that appear perfectly centered to the naked eye are actually somewhere between 50/50 and 52/48.
55/45 — Still Excellent
A 55/45 ratio means the wider border is only 10% larger than the narrower border. This is barely visible without careful inspection and still qualifies for top grades:
PSA: Gem Mint 10 (PSA allows up to 60/40 for a 10 on the front)
BGS: 9.5 centering sub-grade
CGC: 9.5 centering sub-grade
SGC: 10
This is the most common ratio for cards that collectors describe as "well centered." If your card measures 55/45 or better, centering will not be the reason it loses a grade.
This is what most people are searching for when they look up "55/45 centering example." A 55/45 card looks nearly perfect to the eye — you might notice a slightly wider border on one side if you look closely, but it is subtle.
60/40 — The PSA 10 Cutoff
A 60/40 ratio is where centering becomes visibly noticeable. The wider border is 50% larger than the narrower one. This is the critical threshold:
PSA: This is the maximum allowed for a PSA 10 on the front (75/25 on the back)
BGS: 9.0 centering sub-grade
CGC: 9.0 centering sub-grade
SGC: 9
At 60/40, most collectors can see the offset when they look at the card. The card is still well within acceptable range for grading, but it is no longer what anyone would call "perfectly centered."
65/35 — Below PSA 10 Territory
A 65/35 ratio is clearly off-center. The wider border is nearly twice the width of the narrower one:
PSA: Maximum for PSA 8 (front centering)
BGS: 8.0 centering sub-grade
CGC: 8.0 centering sub-grade
At this level, centering is immediately obvious. If your card measures 65/35, it will not receive a PSA 10 or 9 regardless of how perfect the corners, edges, and surface are. Centering becomes the grade-limiting factor.
70/30 — Significantly Off-Center
A 70/30 ratio means the wider border is more than twice the width of the narrower border:
PSA: PSA 7 territory (front centering)
BGS: 7.0 or lower centering sub-grade
CGC: 7.0 or lower
At 70/30, the card is noticeably miscut. While it may still be worth grading for rare vintage cards where any graded copy commands a premium, for modern cards this level of off-centering typically makes professional grading not worth the cost.
Centering Standards by Company
Each grading company has slightly different centering requirements. Here is a complete reference:
Grade
PSA (Front/Back)
BGS Sub-Grade
CGC Sub-Grade
SGC
10
60/40 / 75/25
50/50 to 52/48
50/50 to 52/48
55/45 / 55/45
9.5
—
55/45
55/45
—
9
65/35 / 90/10
60/40
60/40
60/40 / 60/40
8
70/30 / 90/10
65/35
65/35
65/35 / 65/35
7
75/25 / 90/10
70/30
70/30
70/30 / 70/30
Key differences to note:
PSA has the most lenient front centering at 60/40 for a 10, but they don't give sub-grades so the centering score is baked into the overall grade
BGS and CGC require near-perfect 50/50 to 52/48 for a 10 sub-grade, but since centering is just one of four sub-grades, a 9.5 centering can still result in a high overall grade
SGC requires 55/45 or better for a 10
Front vs Back Centering
Every card has two centering measurements: front and back. All grading companies evaluate both, but they weight them differently.
PSA is the most forgiving on back centering — a card can have 75/25 centering on the back and still receive a PSA 10, as long as the front is 60/40 or better.
BGS gives separate centering sub-grades that combine front and back into a single centering score. A perfectly centered front with an off-center back will lower the centering sub-grade.
In practice, most collectors focus on front centering because it is visible when the card is displayed. But don't ignore the back — especially for BGS submissions where the centering sub-grade is prominently displayed.
How to Measure Your Card's Centering
The easiest and most accurate way to measure centering is with a digital tool. Our card centering calculator lets you upload a photo and get exact measurements for both front and back in under 30 seconds.
If you prefer to measure manually:
Measure the left and right borders with a ruler or calipers (in millimeters for precision)
Calculate the ratio: Left border / (Left border + Right border) × 100
Repeat for top and bottom
Report the wider number first: If left is 55% and right is 45%, the ratio is 55/45
For example, if the left border is 2.2mm and the right border is 1.8mm:
Total = 4.0mm
Left percentage = 2.2 / 4.0 = 55%
Ratio = 55/45
Common Centering Questions
Does centering vary between front and back?
Yes. It is common for a card to have good centering on the front and worse centering on the back (or vice versa). This is because the front and back of a card are printed on separate sheets that are then laminated together, and the alignment between sheets can differ.
Can centering be fixed?
No. Centering is a manufacturing defect that cannot be corrected after the card is produced. This is why centering is the most important attribute to check before submitting — if centering fails, no amount of card care will fix it.
Is centering the most important grading attribute?
According to our State of Card Grading 2026 study, centering is the #1 grade-limiting factor. More cards lose grade points to centering than to corners, edges, or surface issues combined. This makes it the single most important thing to check before submitting to any grading company.
What if my card is borderless?
Borderless or full-art cards are measured differently. Grading companies look at the distance from the card edge to key design elements (like the text box or card name) rather than border widths. The centering calculator handles borderless cards as well.
For a comprehensive overview of all centering standards and how they differ between grading companies, read our complete card centering guide.
Check Your Card Now
Don't guess at centering — measure it. Use our free card centering calculator to get exact centering ratios for your card in seconds. Upload a photo and know instantly whether your card meets PSA 10, BGS 10, or CGC 10 centering standards.
Jamie Budesky is the founder of CardGrade and the engineer behind its AI vision grading pipeline. An Army veteran and IT specialist (DoD, since 2017), he writes about card grading, AI/ML grading technology, and collecting strategy — grounded in CardGrade's own grading data.
