Grade Probability Calculator
What grade will your card get? Rate corners, edges, surface, and centering — then see your probability of getting each grade from PSA, BGS, and CGC before you pay to submit.
Rate Your Card's Condition
Light touch — nearly perfect
Very slight imperfections
Barely perceptible imperfections
55/45 — minimal shift
Frequently Asked Questions
How accurate is this grade probability calculator?
This calculator uses the same four criteria professional graders evaluate (corners, edges, surface, centering) and models the known grading tendencies of PSA, BGS, and CGC. Most users find their actual grades fall within 0.5-1 points of the expected grade. It is a screening tool — not a guarantee. Factors like print quality, card stock thickness, and specific grader tendencies introduce real-world variance.
Why does PSA not show 9.5 or 8.5 grades?
PSA uses whole-number grades only (1-10). There is no PSA 9.5 — a card either gets a 10 (Gem Mint) or a 9 (Mint). BGS uses half-grades (9.5, 8.5) and gives subgrades for each criterion. This is why some collectors prefer BGS for borderline cards — a BGS 9.5 Gem Mint is easier to achieve than a PSA 10 and still commands strong premiums.
What is the cap rule in grading?
Your weakest criterion limits your maximum grade. If your corners are a 5/5 but centering is 2/5, you cannot receive a PSA 10 — the centering caps your maximum. PSA generally caps at the weakest + 1 grade point. This means one weak area can drag down an otherwise perfect card. Always assess your weakest criterion first.
Should I submit to PSA, BGS, or CGC?
PSA 10 commands the highest resale premium for most cards (especially sports). BGS 9.5 Gem Mint is easier to achieve and sells within 70-85% of a PSA 10 for most cards. BGS 10 Black Label actually sells HIGHER than PSA 10 but is extremely rare. CGC is newer to sports cards, has the fastest turnaround, and is generally the most affordable. Choose based on your priorities: maximum premium (PSA), subgrade detail (BGS), or speed and value (CGC).
Does vintage vs modern matter for grading?
Yes, significantly. Graders are more lenient with vintage cards (pre-1980) because pristine condition is extremely rare for cards that are 40+ years old. A PSA 8 vintage card has far more market value relative to raw than a PSA 8 modern card. Additionally, vintage cards benefit from authentication — grading proves the card is genuine, which is valuable even at lower grades.
Condition Self-Grader
Step-by-step grade assessment
Submission Planner
Compare grading company costs
Grading ROI Calculator
Is grading worth it financially?
BGS Subgrade Calculator
Calculate BGS overall from subs
Photo Grade Estimator
Quick visual grade assessment
Centering Calculator
Measure border centering ratio