Pan Swap Scaler
Scale a recipe to a different pan by area, with the math shown, offline.
Pan Swap Scaler is a single offline web page for home bakers who want to use a cake or brownie recipe in a pan size they own. Enter the pan the recipe was written for and the pan you have, in centimetres or inches. The tool shows the area formula and scale factor, then scales each ingredient line you type in by that factor. Amounts can be decimals, fractions (1/2) or mixed numbers (1 1/2). Lines it cannot read are listed as skipped, not guessed. If you enter the new pan's wall height, it shows how full the batter will be against a common rule of thumb. Free online pan-conversion calculators already exist. What this tool offers is that it runs entirely in your browser: no account, no upload, no network connection, nothing saved. It also shows the exact formula it used, so you can check the arithmetic yourself. Limits: it scales by pan area only and keeps batter depth the same. It does not calculate a new bake time; your original time is shown only as a first check point. It does not verify baking chemistry, pan material, oven differences or doneness. Eggs and leaveners (baking powder, baking soda, yeast) do not scale linearly with area, so their scaled amounts are a starting point only. It is not a general recipe manager.
Format: html tool · Instant download (.zip) · Includes: README.md, index.html
Created with AI assistance and checked automatically before release.
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