Does a PSA 10 centering result mean the card will grade 10?
No. It means only that the measured centering clears this tool's PSA 10 centering threshold. Other condition factors and the professional review still decide the result.
PSA centering planning tool
PSA Centering Calculator
PSA uses whole-number grades and centering acts as a ceiling alongside the rest of the card's condition. This calculator applies the project's pinned PSA front/back threshold table to the worse measured axis on each side.
Your photo never leaves your browser while you measure; transfer happens only when you choose a full grade
Using the PSA centering calculator
- Measure both axes on the front; the worse left/right or top/bottom ratio controls the front tier.
- Add the back instead of assuming it is centred. PSA's pinned back tolerances differ from its front tolerances.
- Treat a threshold-edge result cautiously because perspective and line placement can move a rounded ratio by a point.
What the result can tell you
- The displayed PSA number is a centering tier estimate, not a predicted final grade by itself.
- Corners, edges and surface can set a lower final result even when centering clears the top tier.
Centering threshold reference
PSA
A PSA 10 needs front centering of 55/45 or better, with back centering of 75/25 or better.
PSA uses whole-number grades. This is a centering tier ceiling, not a final-grade promise.
| Tier | Front | Back |
|---|---|---|
| 10 | 55/45 | 75/25 |
| 9 | 60/40 | 90/10 |
| 8 | 65/35 | 90/10 |
| 7 | 70/30 | 90/10 |
| 6 | 80/20 | 90/10 |
Common questions
Why does the calculator use the worse axis?
A card can be centred left-to-right but off top-to-bottom. The limiting axis is the useful planning constraint.