# Guess the paper size: a little game for your eyes

> A sheet appears, drawn to scale. Is it A4 or Letter? A5 or a postcard? Ten rounds. It's harder than it sounds.

Every shape is drawn at the same scale, with a credit card outline for reference. Choose the size you think it is.

The full list of dimensions is in the [paper size calculator](https://pdfjade.com/guides/paper-size-calculator).

Source: https://pdfjade.com/guides/guess-the-paper-size