Is 51 squares as big as a Playing Card?
It's about 85,000 times as big as a Playing Card
The size of a Playing Card is about 0.0006 squares.
(ISO 216 B8 size)
A single ISO 216 B8-size playing card measures 0.0006 squares. Although this size is the most common playing card, many casinos use the smaller "bridge size" card — 0.00028 squares smaller.
There's more! See other comparisons to 51 squares...