Guage Conversion

Does anyone know where to find a guage conversion chart or guide online? I saw a cardboard one in the not so local yarn store. I am looking for something that you can choose or enter your needle size, yarn weight & or stitches /inch and it will tell you how many st/inch on another size needle etc. I would love one for my palm. I have the program knittable which is cool but does not do this.


Free? Or to purchase? I saw one to buy, but I’ll have to do a little search for it. I don’t remember the exact site.