Comic Grading Calculator
Rate four condition aspects for an estimated grade on the 0.5–10.0 scale. Then take that grade to the break-even calculator to see whether a CGC submission would pay for itself.
How the comic grading calculator works
The calculator averages your ratings of four key condition aspects — cover, spine, corners, and pages — and maps the result to a grade range on the standard 0.5–10.0 scale. The spine is weighted slightly higher because spine stress is the most common grade-limiting defect.
Estimate vs. AI grading
This is a heuristic based on your own eye, so treat it as a starting point. A grade on its own does not tell you what to do with the book — for that, take the number into the break-even calculator and see whether the slabbed value clears the tier fee, the handling and the shipping. For an objective grade band with a confidence level and the comps behind it, upload a photo to the AI comic book grader.
Frequently asked questions
How does the comic grading calculator work?
You rate four condition aspects — cover, spine, corners, and pages — and the calculator combines them into an estimated grade range on the 0.5–10.0 scale. It is a quick heuristic to get you in the ballpark before a precise AI grade.
Is the calculator accurate?
It is a rough estimate based on your own visual ratings, so it is only as accurate as your inputs. For an objective grade band — and the fee math that says whether the book is worth submitting — upload a photo to the ComicMintAI grader.
Is the comic grading calculator free?
Yes, the calculator is completely free and requires no signup. The AI photo grader also offers free credits to start.
Does the calculator estimate value too?
The calculator focuses on grade. Because value depends on the specific issue and recent sales, use the AI grader or value estimator to turn a grade into a market value.