What centering ratio does PSA require for a 10?

PSA requires 60/40 or better centering on both left-right and top-bottom axes for a Gem Mint 10. Our AI measures your card's exact centering ratios so you know before you submit.

How does the centering calculator work?

Upload a photo of your card and our AI detects the card borders, measures the distance from each edge to the card content, and calculates the exact left/right and top/bottom centering ratios.

Can centering alone prevent a PSA 10?

Yes. Even if corners, edges, and surface are perfect, centering worse than 60/40 will cap your PSA grade at 9. BGS is even stricter—requiring 50/50 to 55/45 for a 10 sub-grade.

Does centering analysis work for vintage cards?

Yes. Our AI handles vintage cards with irregular borders, including cards with natural print shifts common in pre-1980s sets. The analysis accounts for era-specific tolerances.

Sub-Pixel Measurement

Precision Centering Analysis.

Precise left/right and top/bottom centering measurements with visual overlay and grade prediction. Accurate centering is the difference between a PSA 10 and a PSA 8. Get the exact ratio in under 3 seconds.

55/45

PSA 10 Threshold

50/50

BGS Black Label

Microscopic Centering Analysis showing red boundary detection lines

1 Credit / Card

Analyze Centering

Upload Card Image

Place card on a dark, flat surface

Include centering overlay visualization

Grader Interface

Professional Evaluation Screen

Stop guessing if your card is 60/40 or 55/45. Our digital interface draws precise boundary lines to calculate the exact ratio with sub-pixel accuracy.

97%

Matching Accuracy

3.0s

Analysis Speed

Left/Right Centering

Precise percentage split (e.g., 55/45, 60/40) for horizontal alignment.

Top/Bottom Centering

Precise percentage split for vertical alignment across the entire card edge.

Visual Verification

High-resolution overlay showing the exact detected pixels used for measurement.

Impact Data

How Centering Affects Your Card's Grade & Value

Centering alone can drop a PSA 10 to a PSA 8, costing you thousands in value. See the real impact.

💰 Centering Value Impact Calculator

CARD VALUE AT PSA 10:

$1,000

YOUR CARD'S CENTERING:

Grade: PSA 10

Estimated Card Value:

$1,000

Value Lost Due to Centering: $0

100% Value Retained

68%

Of cards fail PSA 10 due to centering alone

$2,400

Average value difference PSA 10 vs PSA 9

3 sec

AI centering analysis time vs 2-3 min manual

97%

Accuracy matching professional grader assessments

Manual Measurements Are Slow

Stop squinting at rulers and guessing millimeters. AI is faster, unbiased, and repeatable.

Get precise results in seconds →

Visual Examples

See Centering Differences in Real Cards

Compare cards with different centering ratios and see how it affects the grade.

55/45

✓ Excellent Centering

PSA 10 Eligible

60/40

~ Good Centering

PSA 9 Maximum

65/35

⚠ Fair Centering

PSA 8 Maximum

70/30

✗ Poor Centering

PSA 7 or Lower

Horizontal Centering

Left/right border balance is most critical for grade

Vertical Centering

Top/bottom balance also affects final grade

Combined Analysis

Both dimensions measured for accurate grading

Understanding Centering

Centering Standards by Grading Company

Compare centering requirements across all major grading companies to understand what grade your card might receive.

Quick Comparison: Front Centering Requirements

Grade Level	PSA	BGS	CGC	SGC	TAG
Pristine/Perfect 10	—	50/50	50/50	50/50	51/49
Gem Mint 10	55/45	—	55/45	55/45	55/45
Gem Mint 9.5	—	55/45	—	55/45	—
Mint 9	60/40	60/40	60/40	60/40	60/40
NM-MT 8.5	—	60/40	65/35	65/35	62.5/37.5
NM-MT 8	65/35	65/35	65/35	65/35	65/35
NM 7	70/30	70/30	70/30	70/30	70/30
EX-MT 6	80/20	75/25	75/25	75/25	75/25

PSA Professional Sports Authenticator

Industry leader, most recognized for sports cards

Grade	Front	Back
10 Gem Mint	55/45	75/25
9 Mint	60/40	90/10
8 NM-MT	65/35	90/10
7 NM	70/30	90/10
6 EX-MT	80/20	90/10

BGS Beckett Grading Services

Known for sub-grades, popular for modern cards

Grade	Front	Back
10 Pristine (Black)	50/50	55/45
9.5 Gem Mint	55/45	60/40
9 Mint	60/40	70/30
8.5 NM-MT+	60/40	80/20
8 NM-MT	65/35	80/20

CGC Certified Guaranty Company

Leading service for TCGs (Pokémon, Magic, etc.)

Grade	Front	Back
10 Pristine	50/50	Perfect
10 Gem Mint	55/45	75/25
9.5 Mint+	55/45	80/20
9 Mint	60/40	90/10
8.5 NM/MT+	65/35	90/10

SGC Sportscard Guaranty Corporation

Known for tuxedo slab, strong in vintage market

Grade	Front	Back
10 Pristine	50/50	50/50
10 Gem Mint	55/45	70/30
9.5 Mint+	55/45	55/45
9 Mint	60/40	60/40
8.5 NM/MT+	65/35	65/35

TAG Technical Authentication & Grading

Newer company with high-tech approach and detailed reports

Grade	Front	Back
10 Pristine	51/49	54/46
10 Gem Mint	55/45	70/30
9 Mint	60/40	90/10
8.5 NM/MT+	62.5/37.5	95/5
8 NM/MT	65/35	No limit

TAG Unique Features

High-resolution imaging analysis
Strictest Pristine 10 standards (51/49)
Detailed technical grading reports
AI-assisted defect detection

Key Centering Insights

Front vs Back

Front centering is always more critical. Back centering requirements are more lenient across all companies.

Industry Standard

55/45 front / 75/25 back is the most common Gem Mint 10 standard (PSA, CGC, SGC).

Strictest Standards

BGS Black Label (50/50) and TAG Pristine (51/49) have the strictest centering requirements.

Don't Let Poor Centering Kill Your Grade

A card with perfect corners and surface can still get a PSA 8 or lower due to 65/35 centering. Check your centering in 3 seconds before spending $30+ on grading. Our AI measures with sub-pixel accuracy—the same precision professional graders use. Start with 5 free credits.

Check Your Centering Now