OhMyCalc

Trading Card Condition Calculator

Estimate the PSA-style grade of a trading card based on corners, surface, centering, and edges.

How to Use the Card Condition Calculator

  1. Select the corner condition.
  2. Select the surface condition.
  3. Enter the centering percentage (50–100%).
  4. Select the edge condition.
  5. Click Calculate to get the estimated grade and grade name.

حالات الاستخدام

الصيغة

Grade = average of corner score + surface score + edge score + centering score (each out of 10).

الأسئلة الشائعة

What grading scale does this use?
This uses a 1–10 scale similar to PSA (Professional Sports Authenticator), where 10 is Gem Mint and 1 is Poor.
What centering percentage should I enter?
Centering is measured as the percentage of the narrowest border relative to the widest. 98%+ is considered superb. Below 80% is typically off-center.
Is this the same as PSA grading?
No. This is an estimate for educational purposes. For official grading, submit your card to PSA, BGS, or CGC.