I found this website a long time ago and I love it. It is a good tool and very helpful. It is called My Quilt Genie. It has calculators for bias binding, set in triangle calculators, shows quilt backings cut on the diagonal to fit your quilts, and lots of patterns. Check it out...here's the link.
Be sure and check out her blog too....You can get to her blog off of her website or here's a link for that. Quilt Genie.
Dancing Butterfly Design #23 - Hot Hot Spiral
5 minutes ago