what is the standard size of a greeting card
Height and Width of a Hallmark Card. Well they vary! I've got some here right now (my birthday recently) -- one is 7.25 tall, 4.25 wide, another is 5.5 x 8.5, another is smaller than the first, etc. Go to a greeting card store and you'll see everything from little cards that fit in the palm to gigantic ones. I think the biggest one I ever got was about 2 feet tall.