I need to make a 3 (1inch) layer 10" cake. But I really don't know how. Is the a conversion chart of cupcakes to cake?
I'm not sure, but I did weigh a baked cupcake and an 8" 2 layer (4" high) cake a couple weeks ago,and the math worked out to 26 cupcakes to an 8"... hope that makes sense!
I would go for at least 45 cupcakes worth of batter, for a 10".
It looks easy enough to half. Just do the math and see if you are comfortable. Weighing would be best, though.
A bit extra won't hurt if you have it budgeted. You can always bake them as cupcakes, and freeze, so you have a midnight snack!