Cake Pan Calculators
Choosing and swapping baking pans is where most recipes go wrong — a pan that's too big bakes a thin, dry cake, and one that's too small overflows. These three free calculators cover the pan decisions that matter, all built on measured pan capacities (Joy of Baking's pan size chart), Wilton's serving and batter chart, and plain geometry, with instant on-device math.
Start with the cake pan converter when you have a recipe for one pan but want to bake it in another: it draws both pans to scale, gives the exact ingredient multiplier, and adjusts the bake time and temperature for the new batter depth. Use the pan volume calculator for an odd or custom-sized pan, to find exactly how much it holds and how much batter fits at a two-thirds fill. And when it's time to serve, the cake serving calculator tells you how many slices a single cake or a tiered cake will yield. The most-asked pan swaps have their own worked pages — 9x13 pan to cupcakes, 8 inch round to 9x13 pan and 8 inch round to 9 inch round among them.
Together they answer the three questions every baker asks about a tin: will my recipe fit, what do I change if I swap pans, and how many people will it feed?