How does PSA calculate grades?

PSA typically uses the lowest subgrade as a ceiling, with some grader discretion. A card with corners 9, edges 9, surface 9, and centering 8 will likely receive an 8 or 8.5 overall, not a 9.

How does BGS calculate grades?

BGS uses a weighted average of all four subgrades (corners, edges, surface, centering). To earn a BGS 9.5 Gem Mint, a card typically needs three 9.5 subgrades and no subgrade below 9. A BGS 10 (Black Label) requires perfect 10s across all categories.

What is the difference between PSA and BGS grading?

PSA uses whole numbers (1-10) with no subgrades on standard submissions. BGS uses whole and half numbers with subgrades included, providing more transparency into why a card received its grade.

Can I get a PSA 10 if one subgrade is lower?

Generally no. PSA 10 requires near-perfection across all four criteria. If any single area has significant wear, the overall grade will be capped below 10.

What is BGS Black Label?

BGS Black Label is awarded only when all four subgrades are perfect 10s. It is one of the rarest and most valuable grades in the hobby.

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How Card Grades Are Calculated

PSA Grading

PSA uses a 1-10 scale without published subgrades. The overall grade is determined by the lowest condition area, though graders have some discretion. PSA 10 (Gem Mint) requires near-perfect condition in all areas.

PSA 10: Gem Mint - Virtually perfect
PSA 9: Mint - One minor flaw
PSA 8: Near Mint-Mint - Minor wear
PSA 7: Near Mint - Slight wear

BGS Grading

BGS provides subgrades for Centering, Corners, Edges, and Surface. The overall grade is a weighted average, with corners and edges typically having more impact.

BGS 10 Black Label: All four subgrades must be 10
BGS 10 Pristine: Average of 10, no subgrade below 9.5
BGS 9.5 Gem Mint: High subgrades averaging 9.5+
BGS 9 Mint: Solid subgrades averaging 9+

CGC Grading

CGC uses a 1-10 scale similar to PSA. Popular for Pokémon and other TCG cards. They also offer subgrades as an optional service.

SGC Grading

SGC uses a 1-10 scale and is known for expertise in vintage cards. Their grading standards are considered consistent and fair.

⚠️ Important Note

This calculator provides estimates based on publicly known grading standards. Actual grades depend on the specific grader's assessment and may vary. Always examine your cards carefully before submitting.

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