This adorable granny square pattern does not provide the measurements for this square, but you can crochet it to basically any size that you need. You could try experimenting with different yarn and hook sizes to obtain the size you want.
With that said, the pattern recommends a worsted weight yarn in three colors and an H or an I crochet hook.
If you enjoyed this free crochet pattern you might also enjoy more designs by Age’s Crochet Pages.