I am sure y'all can tell me what size you make your baby quilts & lap quilts
Thanks for your help bug

baby quilts anywhere from 36"x45" up to about 40"x54"
lap/sofa quilts anywhere from about 54"x72" up to about 60"x80".

ckcowl gave excellent measurements.

Were you reading my mind? I've been meaning to ask just the same!

Out of curiosity ... what is a crib mattress size?
if I'm wanting to make it big enough for there.

I make most of my baby quilts 45" square.

I make baby quilts about 45x60. Toddler quilts about 50x65

I make my baby quilts 54" x 54" or bigger. The last couple I have done were 62 x 62. I do this size so the baby can grow into the quilt. Most parents will not use a quilt in the actual crib anymore, found some parents are actually draping the quilt over the end of the crib or using it for a wallhanging. But, by making them larger, they can enjoy them for many, many years.

I don't really do a baby size. I usually do a lap size that way as baby grows the quilt can still be used.