Baw Vault
← Tools

Tools

Centering Calculator

Measure all four borders with a loupe and enter the values in mm.

How to measure

Place the loupe flat against the border. Measure from the card edge to the inner edge of the printed border line.

Measuring the left border on the card front Front · left
Measuring the right border on the card front Front · right
Measuring the left border on the card back Back · left
Measuring the right border on the card back Back · right

Use the same technique for top and bottom borders.

The loupe I use Amazon → Shopee → Affiliate link

Measurements

Results

Enter all four measurements to see results.

Left / Right – / –
Top / Bottom – / –
Grader Worst axis Centering grade

Grader Thresholds

Centering grade is determined by the worst of the two axes. Graded cards are evaluated independently per axis by BGS; this calculator uses the worst-axis method as a conservative estimate.

Grade PSA BGS TAG
10 / Pristine 55/45 50/50 55/45
9.5 / Gem Mint N/A 55/45 N/A
9 / Mint 60/40 60/40 60/40
8 65/35 65/35 65/35
Below 8 >65/35 >65/35 >65/35

Card centering is one of four subcategories PSA, BGS, and TAG evaluate when grading Pokémon and One Piece TCG cards. To achieve a PSA 10, centering must be 55/45 or better on both axes. BGS Pristine 10 requires a stricter 50/50, while BGS Gem Mint 9.5 allows up to 55/45. TAG 10 follows the same standard as PSA 10. Any axis worse than 65/35 drops a card below grade 8 regardless of condition.