FREE CARD TOOL
Trading Card Centering Calculator
Measure the visible borders on the front and back of your card, then compare the result with PSA centering standards.
PSA 10 FRONT55 / 45
PSA 10 BACK75 / 25
STEP 1
Measure the printed borders
Use the same visible print boundary for every measurement. Do not measure the full card width or height.
Digital caliper recommended
Card front
FRONTMeasure all four borders
TOP
RIGHT
BOTTOM
LEFT
TCG
Measure from the outer card edge to the same inner print boundary on each side. Use a ruler or digital caliper and record millimeters.
Card back
BACKMeasure all four borders
TOP
RIGHT
BOTTOM
LEFT
CARD
Measure from the outer card edge to the same inner print boundary on each side. Use a ruler or digital caliper and record millimeters.
STEP 2
frontFront measurements
Left / RightL 51.7% · R 48.3%
52/48Top / BottomT 50.0% · B 50.0%
50/50STEP 3
backBack measurements
Left / RightL 50.0% · R 50.0%
50/50Top / BottomT 51.7% · B 48.3%
52/48REFERENCE
Centering thresholds used
Ratios show the larger border share first. Left/right and top/bottom are checked separately, with front and back evaluated independently.
| PSA grade | Front centering | Back centering |
|---|---|---|
| 10GEM-MT | 55/45 or better | 75/25 or better |
| 9MINT | 60/40 or better | 90/10 or better |
| 8NM-MT | 70/30 or better | 90/10 or better |
| 7NM | 75/25 or better | 90/10 or better |
| 6EX-MT | 80/20 or better | 90/10 or better |
| 5EX | 85/15 or better | 90/10 or better |
| 4VG-EX | 85/15 or better | 90/10 or better |
| 3VG | 90/10 or better | 90/10 or better |