Is this an official card grade?
No. It is a planning estimate from your line placement. Only the grading company can issue an official grade.
Private, no-login measurement
Free Card Centering Checker
Place the amber lines on the physical card edge and the cyan lines on the printed frame. The checker calculates left/right and top/bottom ratios on each side, then shows the company tier those measurements clear.
Your photo never leaves your browser while you measure; transfer happens only when you choose a full grade
How to measure a trading card consistently
- Use a straight, evenly lit scan or photo so perspective does not make one border look wider.
- Measure the physical card edge to the repeatable printed frame—not a character, logo or intentionally asymmetric design element.
- Add the back whenever possible. PSA and BGS use different front/back tolerances, so a front-only result is incomplete.
What the result can tell you
- Centering is one condition dimension. Corners, edges and surface can still lower a full grade.
- A strong centering result is a reason to inspect the rest of the card, not a guarantee of a professional grade.
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 |
BGS (Beckett)
A BGS 10 needs front centering of 55/45 or better, with back centering of 55/45 or better.
BGS reports centering as a subgrade and uses distinct front/back tolerances in this pinned table.
| Tier | Front | Back |
|---|---|---|
| 10 | 55/45 | 55/45 |
| 9.5 | 55/45 | 60/40 |
| 9 | 60/40 | 65/35 |
| 8.5 | 65/35 | 70/30 |
| 8 | 70/30 | 75/25 |
| 7 | 75/25 | 80/20 |
TAG estimate
A TAG 10 needs front centering of 52/48 or better, with back centering of 52/48 or better.
This is CardRevive's internal BGS-equivalent estimate, not a reproduction of TAG's proprietary photometric method.
| Tier | Front | Back |
|---|---|---|
| 10 | 52/48 | 52/48 |
| 9.5 | 55/45 | 65/35 |
| 9 | 60/40 | 75/25 |
| 8 | 65/35 | 90/10 |
Common questions
Does the back of the card matter?
Yes. Add a back image for a more useful result; the checker applies each company's separate front and back tolerances.